How do you distribute an exponent (X-2y)2

Answers

Answer 1
Answer - the terms inside of the parentheses is multiplied by itself = x^2 - 4xy + 4y^2

Given (x - 2y) ^2

(x - 2y )( x - 2y)

x^2 - 4xy + 4y^2

Related Questions

A pair of standard since dice are rolled. Find the probability of rolling a sum of 12 with these dice.
P(D1 + D2 = 12) = ------

Answers

The probability of rolling a sum of 12 with these dice.

P(D1 + D2 = 12) = 1/36.

When two standard six-sided dice are rolled, there are 36 conceivable results (6 x 6 = 36). To calculate the likelihood of rolling an entirety of 12, we ought to decide how numerous of these 36 conceivable results result in a sum of 12.

As it were a way to induce an entirety of 12 is to roll two sixes, so there's as it were one conceivable result that comes about in a whole of 12. Hence, the likelihood of rolling an entirety of 12 with two dice is 1/36, or roughly 0.0278 (adjusted to the closest thousandth).

This is often because the likelihood of rolling a particular number on one pass-on is 1/6, and since we have two dice, we duplicate 1/6 by 1/6 to induce the likelihood of a particular combination, which is 1/36.

In other words, the likelihood of rolling an entirety of 12 is exceptional moo, which makes it an uncommon event when rolling two dice.

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Example 2
Gabriela plans to carpet her living room, except for the quarter-circle shown in the
corner. That area will be a wood floor where she will put her piano. The radius of a
quarter circle is 8 feet. If carpeting costs $9.55 per square foot, what is the cost of the
carpeting she will use in her living room?

Answers

The cost of the carpeting Gabriela will use in her living room is  $3,305.47 and Area of living room is 346.41 sq ft

Area of rectangular room = length x width = 25 ft x 16 ft = 400 sq ft

Area of quarter-circle = (1/4) x pi x r^2 = (1/4) x pi x 8^2 = 16 pi sq ft

So the area of the living room is:

Area of living room = Area of rectangular room - Area of quarter-circle

= 400 sq ft - 16 pi sq ft

= 346.41 sq ft

The cost of carpeting this area is:

Cost of carpeting = Area of living room x Cost per square foot

= 346.41 sq ft x $9.55/sq ft

≈ $3,305.47

Therefore, the cost of the carpeting Gabriela will use in her living room is $3,305.47.

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pls help ASAP 20 points

Answers

Answer:

  A.  Bay Side: mean = 17.1, median = 16; Seaside: mean = 19.5, median = 18

  B.  Bay Side: σ = 8.96, IQR = 12, range = 37; Seaside: σ = 9.03, IQR = 16, range = 31

  C. Bay Side has lower center values and less variation.

Step-by-step explanation:

Given stem and leaf plots for 15 class sizes at each of two schools, you want to know (a) their measures of center, (b) their measures of variation, and (c) which would be preferred for lower class size.

A. Center

The first attachment shows the statistics for Bay Side School. It tells you the measures of center for Bay Side are ...

Mean: 17.1Median: 16

The second attachment shows the statistics for Seaside School. The measures of center there are ...

Mean: 19.5Median: 18

We note the measures of center indicate smaller classes at Bay Side.

B. Variation

For Bay Side School, the measures of variation are ...

Standard deviation: 8.96IQR: 22 -10 = 12Range: 42 -5 = 37; with outlier removed, 25 -5 = 20

For Seaside School, the measures of variation are ...

Standard deviation: 9.03IQR = 27 -11 = 16Range: 36 -5 = 31

The measures of variation are generally smaller for Bay Side.

C. Smaller Classes

The measures of center and the measures of variation both favor Bay Side School as the school of choice for smaller classes.

__

Additional comment

The arithmetic for these descriptive statistics can be tedious and error-prone. It is convenient to let a calculator do it. The lists of data points are given as L1 and L2 for the calculator screens attached. L1 is Bay Side data, and the result of the 1-Var Stats calculation is shown in the first attachment. Seaside data was put in L2, which was used for the calculations shown in the second attachment.

The Q1 and Q3 data values are the 4th lowest and 4th highest data values in each of the lists. The median is the 8th data value, counted from either end.

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uppose you have a set with k elements. set up a recurrence relation to count the number of subsets of the set (alternatively, the cardinality of its power set). don't forget your initial condition.

Answers

Therefore, we have the recurrence relation: |P(S_k)| = 2 * |P(S_{k-1})|
with the initial condition |P(S_0)| = 1 (since the empty set is the only subset of the empty set).

Sure! To count the number of subsets of a set with k elements, we can use the fact that each element can either be in a subset or not. This gives us two options for each element, so there are 2^k total subsets.

To set up a recurrence relation for this, let S_k denote the set with k elements and P(S_k) denote its power set (the set of all subsets of S_k). Then, we can relate P(S_k) to P(S_{k-1}) by considering whether or not to include the kth element in each subset.

If we don't include the kth element, then each subset of S_{k-1} is also a subset of S_k, so there are |P(S_{k-1})| subsets that don't include the kth element.

If we do include the kth element, then each subset of S_{k-1} can be extended by including the kth element, giving us |P(S_{k-1})| more subsets.

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regression statistics multiple r 0.717752328 r square 0.515168405 adjusted r square 0.494754443 standard error 8.735082924 observations 100 anova df ss ms f significance f regression 4 7702.221 1925.555 25.2361 2.9621e-14 residual 95 7248.659 76.302 total 99 14,950.880 step 1 of 2 : how many independent variables are included in the regression model?

Answers

Based on the information provided, it appears that there are 4 independent variables included in the regression model.

This is indicated by the "regression" row in the ANOVA table, which shows that there are 4 degrees of freedom (df) for the regression. This is determined by the degrees of freedom (df) for the regression, which is 4. The df for regression represents the number of independent variables in the model.

A statistical method called regression links a dependent variable to one or more independent (explanatory) variables. A regression model can demonstrate whether changes in one or more of the explanatory variables are related to changes in the dependent variable.

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Please help!
Need help fast.

Answers

A) The corresponding unit rate for each package is,

For Cannie cakes;

⇒ $1.85

Bark bits;

⇒ $2.25

Woofy Waffles;

⇒ $1.9

B) The best buy by the units rates is, Cannie cakes.

We have to given that;

Jeremiah needed dog food for his new pippy.

Now, We get;

A) The corresponding unit rate for each package is,

For Cannie cakes;

⇒ 74/40

⇒ $1.85

Bark bits;

⇒ 27/12

⇒ $2.25

Woofy Waffles;

⇒ 76 / 40

⇒ $1.9

Hence, We get;

B) The best buy by the units rates is, Cannie cakes.

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A mower retails for $425. It is put on sale for 23% off. The store manager discounted the mower another $10. To the nearest tenth of a percent, what is the percent decrease in the mower's price?

Answers

The percent decrease in the mower's price to the nearest tenth of a percent is 25.3%.

We have,

We need to calculate the initial discount given by the 23% off sale:

Discount

= 0.23 x $425

= $97.75

After the first discount, the mower's price is:

New price

= $425 - $97.75

= $327.25

Then, the store manager discounted it by another $10, so the final price is:

Final price

= $327.25 - $10

= $317.25

The total decrease in price is:

= $425 - $317.25

= $107.75

The percent decrease in the mower's price is:

Percent decrease

= (107.75 / 425) x 100%

= 25.3%

Therefore,

The percent decrease in the mower's price to the nearest tenth of a percent is 25.3%.

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Statistics from the Port Authority of New York and New Jersey show that 83% of the vehicles using the Lincoln Tunnel that connects New York City and New Jersey use E-ZPass to pay the toll rather than stopping at a toll booth. Twelve cars are randomly selected.
Click here for the Excel Data File
a. How many of the 12 vehicles would you expect to use E-ZPass? (Round your answer to 4 decimal places.)
b. What is the mode of the distribution (the mode is the value with the highest probability)? What is the probability associated with the mode? (Round your answer to 4 decimal places.)
c. What is the probability eight or more of the sampled vehicles use E-ZPass? (Round your answer to 4 decimal places.)

Answers

Rounding to 4 decimal places, we expect 9.9600 of the 12 vehicles to use E-ZPass.

Rounding to 4 decimal places, the mode is 10 and the probability associated with the mode is 0.2822.

Rounding to 4 decimal places, the probability of eight or more of the sampled vehicles using E-ZPass is 0.9975.

a. We can use the binomial distribution to model the number of vehicles out of 12 that use E-ZPass. The probability of a vehicle using E-ZPass is 0.83, so the expected number of vehicles out of 12 that use E-ZPass is:

E(X) = np = 12 x 0.83 = 9.96

Rounding to 4 decimal places, we expect 9.9600 of the 12 vehicles to use E-ZPass.

b. The mode of the binomial distribution is the value of X that maximizes the probability mass function (PMF). In this case, the PMF is given by:

P(X = x) = (12 choose x) * 0.83^x * 0.17^(12-x)

We can find the mode by calculating the PMF for each possible value of X and identifying the value(s) with the highest probability. Alternatively, we can use the formula for the mode of the binomial distribution, which is:

mode = floor((n+1)p)

where n is the number of trials and p is the probability of success.

In this case, the mode is:

mode = floor((12+1) x 0.83) = floor(10.08) = 10

The probability associated with the mode is:

P(X = 10) = (12 choose 10) * 0.83^10 * 0.17^2 = 0.2822

Rounding to 4 decimal places, the mode is 10 and the probability associated with the mode is 0.2822.

c. The probability of eight or more of the sampled vehicles using E-ZPass can be found using the binomial distribution:

P(X >= 8) = 1 - P(X < 8) = 1 - P(X <= 7)

Using a binomial calculator or a cumulative binomial table, we can find:

P(X <= 7) = 0.0025

Therefore:

P(X >= 8) = 1 - 0.0025 = 0.9975

Rounding to 4 decimal places, the probability of eight or more of the sampled vehicles using E-ZPass is 0.9975.

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Random samples of 6 male students and 14 female students were asked how many hours a week they exercise with the following results: Males: Sample mean is 5.24 and sample standard deviation is 3.01. Females: Sample mean is 4.22 and sample standard deviation is 2.33. (a) Find a 95% confidence interval for true mean hours of exercise per week in each group. Males. ( ), ( ) Females.( ), ( )

Answers

A 95% confidence interval for the true mean hours of exercise per week is (2.08, 8.40) for males and (2.95, 5.49) for females

To find a 95% confidence interval for the true mean hours of exercise per week for each group, we will use the following formula:

[tex]Confidence interval = Sample mean± (t \frac{Sample standard deviation}{\sqrt{n} } )[/tex]
where t is the t-score based on the degrees of freedom and the desired confidence level (95%).

(a) Males:

1. Determine the t-score: For a 95% confidence interval and 6 - 1 = 5 degrees of freedom, the t-score is approximately 2.571.

2. Calculate the margin of error: [tex]2.571 (\frac{3.01}{\sqrt{6} }) = 3.16[/tex]

3. Find the confidence interval: 5.24 ± 3.16 = (2.08, 8.40)

Males: (2.08, 8.40)

(b) Females:

1. Determine the t-score: For a 95% confidence interval and 14 - 1 = 13 degrees of freedom, the t-score is approximately 2.160.

2. Calculate the margin of error: [tex]2.160 (\frac{2.33}{\sqrt{14} })  = 1.27[/tex]

3. Find the confidence interval: 4.22 ± 1.27 = (2.95, 5.49)

Females: (2.95, 5.49)

In conclusion, a 95% confidence interval for the true mean hours of exercise per week is (2.08, 8.40) for males and (2.95, 5.49) for females.

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Word Users According to a survey by Olsten Staffing Services, the percentage of companies reporting usage of Microsoft Word years since 1984 is given by $$ P(t)=\fra…
Word Users According to a survey by Olsten Staffing Services, the percentage of companies reporting usage of Microsoft Word years since 1984 is given by P(t) = 99.774/1+3.014e
(a) What is the growth rate in the percentage of Microsoft Word users?
(b) Use a graphing utility to graph P=P(t)
(c) What was the percentage of Microsoft Word users in 1990
(d) During what year did the percentage of Microsoft Word users reach 90%
(e) Explain why the numerator given in the model is reasonable. What does it imply?

Answers

(a) The growth rate in the percentage of Microsoft Word users is not explicitly provided in the given equation. To find the growth rate, we need the derivative of the function P(t) with respect to time (t).

(b) Graphing the function P(t) requires a graphing utility. The graph will show the percentage of Microsoft Word users over time.

(c) To find the percentage of Microsoft Word users in 1990, substitute t = 1990 into the equation P(t) = 99.774/(1 + 3.014e).

(d) To determine the year when the percentage of Microsoft Word users reached 90%, we need to solve the equation P(t) = 90 for t.

(e) The numerator in the model, 99.774, represents the initial percentage of companies reporting usage of Microsoft Word in 1984. It implies that almost 100% of the surveyed companies were already using Microsoft Word at that time. The model assumes a high initial adoption rate for the software.

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Tickets for a summer concert cost $81.50 each. Starting next week, the tickets will be on sale for 30% off. What will the sale price of the tickets be?

Answers

The sale price of the ticket is $57.05

How to calculate the sale price of the ticket?

The ticket for the summer concert is $81.50

The ticket will be on sale for 30% off

The sale price can be calculated as follows

81.50 × 30/100

= 81.50 × 0.3

= 24.45

Sale price= 81.50-24.45

= 57.05

Hence the sale price is $57.05

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employees at an antique store are hired at a wage of $15 per hour, and they get a $0.75 raise each year. write an equation that shows how a worker's hourly wage, y, depends on the number of years he or she has worked at the store,

Answers

To represent the hourly wage of an employee at the antique store, we can use the following equation:
y = 15 + 0.75x
where y represents the worker's hourly wage, and x represents the number of years the employee has worked at the store. In this equation, 15 is the initial hourly wage, and 0.75 is the annual raise.

The equation that shows how a worker's hourly wage, y, depends on the number of years he or she has worked at the store can be written as:

y = 15 + 0.75x

where x represents the number of years the employee has worked at the antique store.

This equation takes into account the starting wage of $15 per hour and the $0.75 raise that the employee receives each year they work at the store.

So, for example, if an employee has worked at the store for 5 years, their hourly wage would be:

y = 15 + 0.75(5) = 18.75

where y represents the worker's hourly wage, and x represents the number of years the employee has worked at the store.

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Suppose that X~ unif(-1,2), and define Z = e. First, find pdf of Z, and use it to calculate E [Z]. Then, use
the formula for the expected value of a function of RV to find E [Z], and compare with your previous answer.
In order to get an upvote, use legible handwriting

Answers

The value of E(Z)=[tex]=e^{\frac{2}{3} }[/tex]

To find the pdf of Z, we need to use the transformation formula for pdfs:

[tex]f_Z(z) = f_X((g)^{(-1)}z ) * |(\frac{d}{dz}) (g)^{-1} (z)|,[/tex]

where [tex]g(x) = e^x[/tex] and [tex](g)^{-1} (z) = ln(z)[/tex] since [tex](e)^{(ln(z)} = z[/tex].

So, we have:

[tex]f_Z(z) = f_X(ln(z)) * |\frac{d}{dz} ln(z)|[/tex]

[tex]=\frac{1}{3z} (for 0 < z < e^2)[/tex]

To find E[Z], we can use the definition of expected value:

[tex]E(Z) = \int\limits {0^{e^{2} } } z f_Z(z) dz \,[/tex]

[tex]E(Z) = \int\limits {0^{e^{2} } } z (\frac{1}{3z} ) dz \,[/tex]

[tex]= (\frac{1}{3} ) \int\limits {0^{e^{2} } } dz \,[/tex]

[tex]= (\frac{1}{3} ) {e^{2} -0 }[/tex]

[tex]=e^{\frac{2}{3} }[/tex]

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Write an expression in terms of x, for the perimeter of the quadrilateral. Express your answer in its simplest form

Answers

The expression in terms of x, for the perimeter of the quadrilateral is:

22x + 12

How to write an expression in terms of x, for the perimeter of the quadrilateral?

The perimeter of an object is the sum of the sides of the the object. Thus, the perimeter of the quadrilateral can be found by adding all the four sides of the quadrilateral. That is:

Perimeter = (3x-5) + (2x+7) + (15x-2) + (2x-3)

Perimeter =  3x-5 + 2x+7 + 15x-2 + 2x-3

Perimeter =  22x + 12

Therefore,  the expression in terms of x, for the perimeter is 22x + 12.

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Complete question

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HELP MEEE!!!


A ball is thrown downward from the top of a 200-foot building with an initial velocity of 16 feet per second.The height of the ball h in feet after t seconds is given by the equation h= -16t^2 -16t +100.How long after the ball is thrown will it strike the​ ground?

Answers

The time it takes the ball to strike the ground after it is thrown, found using the kinematic equation, H = -16·t² - 24·t + 200 is approximately 2.86 seconds

We know  that,

A kinematic equation is an equation of the motion of an object moving with a constant acceleration.

The direction in which the ball is thrown = Downwards

Height of the building = 200 foot

Initial velocity of the ball = 24 ft./s

The kinematic equation that indicates the height of the ball after t seconds is, H = -16·t² - 24·t + 200

At ground level, H = 0, therefore;

H = 0 = -16·t² - 24·t + 200

-16·t² - 24·t + 200 = 0

-2·t² - 3·t + 25 = 0

t = (3 ± √((-3)² - 4 × (-2)×25))/(2×(-2))

t = (3 ± √(209))/(-4)

t =  (3 + √(209))/(-4) ≈ -4.36 and t =  (3 - √(209))/(-4)) ≈ 2.86

The time it takes the ball to strike the ground after it is thrown is approximately 2.86 seconds.

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7. Use the following figure to answer questions a-d.
a. Find the perimeter of the figure if the following is true:
a = x + 7
b = 2x + 2
C = 8x
d = x + 10

b. What is the perimeter of the figure in part
(a) if x = 4

c. What is the perimeter of the figure in part (b)
if x = 2 ?

d. Find the perimeter of the figure if the following
is true:
a = x2
b = 4x + 8
c = 2x²
d = x​

Answers

a)  The perimeter of the figure [tex]p = 12x + 19[/tex]

b) The perimeter of the figure when [tex]x = 4[/tex] is 67 units.

c)  The perimeter of the figure when[tex]x = 2[/tex] is 43 units

d)  The perimeter of the figure is [tex]3x^2 + 5x + 8[/tex] units.

a) The perimeter P of the figure is the sum of the lengths of its sides:

[tex]P = a + b + c + d[/tex]

Substituting the given expressions for a, b, c, and d in terms of x, we get:

[tex]P = (x + 7) + (2x + 2) + (8x) + (x + 10)[/tex]

[tex]= 12x + 19[/tex]

b) Substituting x = 4, we get:

[tex]P = 12x + 19[/tex]

[tex]= 12(4) + 19[/tex]

[tex]= 67[/tex]

Therefore, the perimeter of the figure when [tex]x = 4[/tex] is 67 units.

c) Substituting [tex]x = 2,[/tex] we get:

[tex]P = 12x + 19[/tex]

[tex]= 12(2) + 19[/tex]

[tex]= 43[/tex]

Therefore, the perimeter of the figure when[tex]x = 2[/tex] is 43 units.

d) Substituting the given expressions for a, b, c, and d in terms of x, we get:

[tex]P = x^2 + (4x + 8) + 2x^2 + x[/tex]

[tex]= 3x^2 + 5x + 8[/tex]

Therefore, the perimeter of the figure when[tex]a = x^2, b = 4x + 8, c = 2x^2,[/tex] and [tex]d = x[/tex] is [tex]3x^2 + 5x + 8[/tex] units.

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what is the mass of x divided by 12

Answers

The value of expression is,

⇒ x ÷ 12

We have to given that;

The algebraic expression is,

⇒ x divided by 12

Hence, We can formulate;

The value of correct expression is,

⇒ x ÷ 12

⇒ x / 12

Thus, The value of expression is,

⇒ x ÷ 12

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A committee of 7 people, which must consist at least 4 men and at least 1 woman, is to be chosen from 10 men and 9 women. (a) Calculate the number of possible committees that can be chosen. (b) 1 woman refuses to be on the committee with a particular man. Calculate the number of possible committees that can be chosen. (c) The committee that is chosen consists of 4 men and 3 women. They queue up randomly in a line for refreshments. Calculate the probability that the no women are next to each other in the queue.

Answers

a. The total number of possible committees is [tex]{10\choose 4} \times {14\choose 3} = 1001 \times 364 = 364364[/tex].

b. The number of committees on which the specific man and woman who refuses to serve on the committee are [tex]{8\choose 3} \times {9\choose 4} = 5040[/tex].

c. There are a limited number of combinations in which no two ladies are consecutive that is  [tex]4! \times {4\choose 3} 3! = 288[/tex].

(a) To form a committee of 7 people from 10 men and 9 women, we can choose 4 men out of 10 in [tex]{10\choose 4}[/tex] ways, and choose 3 more people from the remaining 5 men and 9 women in [tex]{14\choose 3}[/tex] ways. Therefore, the total number of possible committees is [tex]{10\choose 4} \times {14\choose 3} = 1001 \times 364 = 364364[/tex].

(b) If 1 woman refuses to be on the committee with a particular man, we can count the number of committees that do not include that particular man and that woman, and subtract that number from the total number of possible committees.

There are [tex]{9\choose 1}[/tex] ways to choose the woman who refuses to be on the committee with the particular man, and [tex]{8\choose 3}[/tex] ways to choose the remaining 3 women. There are [tex]{9\choose 4}[/tex] ways to choose 4 men out of the 9 remaining men.

Therefore, the number of committees that include the particular man and the woman who refuses to be on the committee is [tex]{8\choose 3} \times {9\choose 4} = 5040[/tex]. The total number of possible committees is [tex]{10\choose 4} \times {9\choose 3} = 12600[/tex]. Thus, the number of possible committees that do not include the particular man and the woman who refuses to be on the committee is 12600 - 5040 = 7560.

(c) There are [tex]{10\choose 4}[/tex] ways to choose 4 men out of the 10 men, and {9\choose 3} ways to choose 3 women out of the 9 women. The total number of possible ways to form a committee of 4 men and 3 women is [tex]{10\choose 4} \times {9\choose 3} = 12600[/tex]. To calculate the probability that no women are next to each other in the queue, we can count the number of arrangements where no two women are consecutive and divide it by the total number of possible arrangements. We can arrange the 4 men in a line in 4! ways, and arrange the 3 women in the 4 spaces between the men in [tex]{4\choose 3} 3![/tex] ways. Therefore, the number of arrangements where no two women are consecutive is [tex]4! \times {4\choose 3} 3! = 288[/tex]. The probability that no women are next to each other in the queue is 288/12600 = 0.0229, or about 2.29%.

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The surface area for this composite figure (rounded to the nearest hundredth if needed).

Answers

The surface area of the composite figure is 1474 square feet.

In the composite figure, there are two shapes rectangular prism and triangular prism.

Surface area of rectangular prism = 2(lb+bh+hl)

= 2(19×9+9×11+11×19)

= 958 square feet

Surface area of triangular prism = (Perimeter of the base × Length of the prism) + (2 × Base Area)

= (S1 +S2 + S3)L + bh

= (13+13+10)×11+10×12

= 516 square feet

Total surface area = 958+516

= 1474 square feet

Therefore, the surface area of the composite figure is 1474 square feet.

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The volume of a spherical balloon is 3054 cm^3. Find the surface area of the balloon to the nearest whole number.

Answers

The surface area of a sphere can be found using the formula:

Surface Area = 4πr²

where r is the radius of the sphere.

To find the surface area of the balloon, we first need to find the radius. We can use the formula for the volume of a sphere to find the radius:

Volume = (4/3)πr³

3054 = (4/3)πr³

r³ = 3054 x (3/4π)

r = 9

Now that we know the radius is 9 cm, we can use the formula for surface area to find the answer:

Surface Area = 4πr²

Surface Area = 4π(9)²

Surface Area ≈ 1018

Therefore, the surface area of the balloon is approximately 1018 cm².

Question 9:6 + 3 + 7 Marks Let O = (0,0), and a = (2,-1) be points in R2. SetG = Bd? (0,1) = {v = (x, y) € R2: d2(0,v) < 1} H = Bd: (a, 1) = {v = (x,y) € R2: d1(a, v) <1}(a) Describe G and H in terms of (x, y)-curves alone, and where applicable without making use of any absolute value symbol. (b) Give the set S of all possible values of y if v = (13,y) € H. (c) Sketch G and H in separate Cartesian coordinates systems (x,y), indicating only O, a and all possible x-intercepts and y-intercepts.

Answers

G and H in terms of x and y is given by H = [tex]B^d[/tex](a, 1) and G = [tex]B^{d_2}(0, 1)[/tex] , the  set S of all possible values of y is x+y≥0 the Cartesian coordinates systems is S = [-7/5, -3/5].

Choosing a point O of the line (the origin), a unit of length, and an orientation for the line are all steps in choosing a Cartesian coordinate system for a one-dimensional space, or for a straight line. The line "is oriented" (or "points") from the negative half towards the positive half when an orientation determines which of the two half-lines given by O is the positive half and which is the negative half. Then, depending on which half-line contains P, the distance between each point P on the line and O can be specified.

a) O = (0, 0) a = (2, -1)∈R²

G = [tex]B^{d_2}(0, 1)[/tex]

D = [tex]\sqrt{x^2+y^2}[/tex] < 1

So this is a circle until center at (0, 0) and no point on

[tex]x^2+y^2[/tex] and every point inside it

H = [tex]B^d[/tex](a, 1) = {v=(x,y)∈R²: d(a, v)≤1}

b) x-2 + y=1 ≤ 1

x-y ≤4

For, x-2≤0, y+1≥0  we get,

2-x+y+1≤1 y-x ≤-2

For, x-2≤0,   y+1≤0,   2-x-y-1≤1

x+y≥0

c) Therefore,

d(a, (13/5, y) ≤ 1

(13/5 -2) + (y +1) ≤ 1

S = [-7/5, -3/5].

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There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root.a. 4x^2 + 16x − 9b. 2x^2 + 80x + 400c. x^2 − 6x − 9d. 4x^2 − 12x + 9e. −x^2 + 14x + 49

Answers

Answer:

x = 3/2 or 1.5

Step-by-step explanation:

All 5 of the quadratics are in standard form, whose general form is

[tex]ax^2+bx+c[/tex]

One of the ways in which we solve quadratic equations is through the quadratic formula which is

[tex]x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}[/tex], where x is the root(s)

We can find the total number of solutions a quadratic equation has using the discriminant from the quadratic formula which is

[tex]b^2-4ac[/tex]

When the discriminant is greater than 0, there is 2 distinct rootsWhen the discriminant is equal to 0, there is 1 distinct rootWhen the discriminant is less than 0, there are 0 distinct/"real" roots

(a.) For 4x^2 + 16x - 9b, 4 is our a value, 16 is our b value and -9 is our c value:

[tex]16^2-4(4)(-9)\\256+144\\400 > 0[/tex]

(b.) For 2x^2 + 80x + 400, 2 is our a value, 80 is our b value, and 400 is our c value:

[tex]80^2-4(2)(400)\\6400-3200\\3200 > 0[/tex]

(c.) For x^2 - 6x - 9, 1 is our a value, -6 is our b value and -9 is our c value

Quick fact:  for x^2 or -x^2, there's a 1 or -1 in front of the variable, but it's usually not written because it's a well known mathematical effect and it's assumed we already know this)

[tex](-6)^2-4(1)(-9)\\36+36\\72 > 0[/tex]

(d.) For 4x^2 - 12x + 9, 4 is our a value, -12 is our b value, and 9 is our c value:

[tex](-12)^2-4(4)(9)\\144-144\\0=0[/tex]

We don't have to do (e.) because we see that since the discriminant for (d.) equals 0, this is the quadratic with only one distinct solution/rootWe can now solve for this root using the quadratic formula

[tex]x=\frac{-(-12)+/-\sqrt{(-12)^2-4(4)(9)} }{2(4)}\\ \\x=\frac{12+/-\sqrt{0} }{8} \\\\x=12/8=3/2\\or\\x=1.5[/tex]

789,506 round to ten thousand

Answers

The answer is 790,000
790,000 is the answer

find the value of x
1. 2x+5=11

2. 3x-6=9

Answers

The value ox in each of the equations given are:

1. x = 3        2. x = 5

How to Solve for the Value of x in an Equation?

For each of the equation given, we can solve to find the value of x by isolating the variable to one side of the equation while applying the properties of equality.

1. 2x + 5 = 11

2x = 11 - 5 [subtraction property of equality]

2x = 6

x = 6/2 [division property]

x = 3

2. 3x - 6 = 9

3x = 9 + 6 [addition property]

3x = 15

3x/3 = 15/3 [division property]

x = 5

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The length of the shorter leg of a 30-60-90 Special Right Triangle is 17 yd long. How long is the longer leg of the triangle? Question 3 options:

Answers

The longer leg of the triangle is 17✓3 yards based on the information of triangle and shorter leg length.

We will use law of sines relating an angle and it's opposite side -

sin shorter angle/shorter side = sin longer angle/longer side

The formula is as per the known fact that wide angle will have wider side opposite to it

Keep the values in formula -

sin 30/17 = sin 60/longer side

Longer side = 17 sin 60/sin 30

Substitute the values of sin 30 and sin 60

Longer side = (17 × ✓3/2)/(1/2)

Longer side = 17✓3 yards.

Thus, the longer leg of the right triangle is 17✓3 yards.

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Cuánto es 234 entre 14?

Answers

The result of dividing 234 by 14 is 16.71 (approximately).

12) Suppose f : [a, b] → R point set). is exactly two-to-one (Vy ER, f-'(y) = 0 or f-(y) is a 2 a) Give an example of such a function b) Prove that no such function can be continuous

Answers

There is no point x in the interval [x1, x2] such that f(x) = y, which contradicts the intermediate value theorem. Hence, no such function f can exist.

What is function?

In mathematics, a function is a relationship between two sets of elements, called the domain and the range.

a) One example of such a function is f(x) = x² on the interval [-1, 1]. Note that f(-1) = f(1) = 1 and for any other value y in the range (0, 1], the preimage [tex]f^{(-1)}[/tex] (y)  consists of exactly two points, namely sqrt(y) and -sqrt(y). Similarly, for any y in the range [-1, 0), the preimage f^(-1)(y) consists of exactly two points, namely sqrt(-y) and -sqrt(-y).

b) To prove that no such function can be continuous, suppose for contradiction that f is a continuous function that is exactly two-to-one. Let y be a value in the range of f, and let x1 and x2 be the two distinct points in the preimage f^(-1)(y). Without loss of generality, we can assume that x1 < x2.

Since f is continuous, it must satisfy the intermediate value theorem. This means that for any value z between f(x1) and f(x2), there exists a point x in the interval [x1, x2] such that f(x) = z. In particular, this holds for the value y, since f(x1) = f(x2) = y.

Since f is exactly two-to-one, the preimage [tex]f^{(-1)}[/tex] (y) must consist of exactly two points. Therefore, there is no point x in the interval [x1, x2] such that f(x) = y, which contradicts the intermediate value theorem. Hence, no such function f can exist.

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Question 6 (1 point) CT scans were taken of the brains of Jimmy and 10 members of his family. We want to know if the volume of Jimmy's hippocampus, as measured by the scan, is significantly smaller than those of his family members. Which test should we use? A. one-tailed single-sample t-test B. two-tailed dependent samples t-test C. one-tailed dependent samples t-test D. two-tailed single-sample t-test

Answers

The correct answer is option D, the two-tailed single-sample t-test.

To determine which test should be used in this scenario, we need to consider the following factors:

Type of data: The data collected from the CT scans are continuous data.

Sample size: The sample size is small (11 in total).

Relationship between samples: The data from Jimmy's hippocampus is independent from that of his family members.

Based on these factors, we can eliminate options C and B, which both involve dependent samples.

Next, we need to determine whether we are comparing Jimmy's hippocampus volume to a known value or to the average volume of his family members. If we were comparing Jimmy's hippocampus to a known value (e.g. the population average), we would use a one-sample t-test (option A). However, since we are comparing Jimmy's hippocampus volume to the average volume of his family members, we need to use a two-sample t-test.

Therefore, the correct answer is option D, the two-tailed single-sample t-test.

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Help me please , I really don't understand this ( Find the major arc, Give an exact answer in terms of pi and be sure to include the correct unit.)

Answers

In the given circle, the length of major arc LNM is 29/3(π)

Calculating the length of an arc

From the question, we are to calculate the length of the major arc in the given diagram

Length of an arc is given by the formula

Length = θ/360° × 2πr

Where θ is the angle subtended by the arc at the center of the circle

r is the radius of the circle

From the given information,

r = 6 cm

θ = 360° - 70°

θ = 290°

Substitute the parameters into the formula

Length = 290/360 × 2×π×6

Length = 29/3(π)

Hence,

Length of arc LNM is 29/3(π)

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The tables represent the points earned in each game for a season by two football teams.


Eagles
3 24 14
27 10 13
10 21 24
17 27 7
40 37 55
Falcons
24 24 10
7 30 28
21 6 17
16 35 30
28 24 14


Which team had the best overall record for the season? Determine the best measure of center to compare, and explain your answer.
Eagles; they have a larger median value of 21 points
Falcons; they have a larger median value of 24 points
Eagles; they have a larger mean value of about 22 points
Falcons; they have a larger mean value of about 20.9 points

Answers

The team that has best overall record for the season is the falcons because they have a larger mean value of 20.9 points

How to find the mean of the given data?

The mean of the dataset is defined the sum of all values divided by the total number of values. Therefore mean can be expressed as;

mean = sum of items/number of items

The mean value of Eagles = (3 + 24 + 14 + 27 + 10 + 13 + 10 + 21 + 24 + 17 + 27 + 7 + 40 + 37 + 55)/15

= 310/15 = 20.67

The mean value of falcons = (24 + 24  + 10 + 7 + 30 + 28 + 21 + 6 + 17 + 16 + 35 + 30 + 28 + 24 + 14)/15

= 314/15 = 20.93

Therefore since the mean value of falcons is higher than eagles, falcons has the best overall performance.

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