Intelligence Quotient (IQ) scores are often reported to be normally distributed with μ=100.0
and σ=15.0
. A random sample of 41
people is taken.
Step 1 of 2 : What is the probability of a random person on the street having an IQ score of less than 98
? Round your answer to 4
decimal places, if necessary.

Answers

Answer 1

Answer:

Step-by-step explanation:

To solve this problem, we need to standardize the IQ score using the formula:

z = (x - μ) / σ

where x is the IQ score, μ is the mean IQ score, and σ is the standard deviation of IQ scores.

So, for x = 98, we have:

z = (98 - 100) / 15 = -0.1333

Using a standard normal distribution table or calculator, we can find that the probability of a standard normal variable being less than -0.1333 is approximately 0.4483.

Therefore, the probability of a random person on the street having an IQ score of less than 98 is 0.4483 (or 44.83% rounded to four decimal places).


Related Questions

The scale drawing has a scale of 1 inch:9yards. What is the total area of the composite figure.
The figure is a right triangle with a height of 6 in and the height of 6 inches. The rectangle has a length of 7 inches and a width of 6 inches.
How do you solve?

Answers

The total area of the composite figure is 107/216 square yards.

What is Area?

Area is a measure of the size of a two-dimensional shape or surface. It is the amount of space inside the boundaries of a flat object, measured in square units such as square meters, square feet, or square inches.

To find the total area of the composite figure, we need to first convert the dimensions from inches to yards, since the given scale is in inches per yards.

Since 1 yard is equal to 3 feet, which is equal to 36 inches, we have:

The height of the triangle is 6/36 = 1/6 yards.

The base of the triangle is 9 times the height, which is 9/6 = 3/2 yards.

The length of the rectangle is 7/9 yards.

The width of the rectangle is 6/9 = 2/3 yards.

The area of the triangle is:

(1/2) x (1/6) x (3/2) = 1/8 square yards.

The area of the rectangle is:

(7/9) x (2/3) = 14/27 square yards.

Therefore, the total area of the composite figure is:

1/8 + 14/27 = 107/216 square yards.

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An engineer at an environmentally minded technology company has come up with a process to convert tire waste from the automobile industry into clean energy.

Which statement disputes the inference that pyrolysis is eco-friendly?

Tires have been banned from landfills for years.
The rubber crumbs recovered during pyrolysis have limited applications.
It costs more to recover resources from used tires through pyrolysis than other methods.
Pyrolysis consumes more resources to generate oil and recover rubber crumbs than it generates.

Answers

The detail that best suppοrts the inference that the autο manufacturing industry suppοrts green sοlutiοns is-

"Pyrοlysis generates lοw-cοst energy that can be used in the autοmοbile manufacturing industry".

What is Pyrοlysis?

The pyrοlysis prοcess is the thermal decοmpοsitiοn οf materials at elevated temperatures, οften in an inert atmοsphere.

Given is that an engineer at an envirοnmentally minded technοlοgy cοmpany has cοme up with a prοcess tο cοnvert tire waste frοm the autοmοbile industry intο clean energy.

The detail that best suppοrts the inference that the autο manufacturing industry suppοrts green sοlutiοns is -

"Pyrοlysis generates lοw-cοst energy that can be used in the autοmοbile manufacturing industry".

Therefοre, the detail that best suppοrts the inference that the autο manufacturing industry suppοrts green sοlutiοns is -

"Pyrοlysis generates lοw-cοst energy that can be used in the autοmοbile manufacturing industry".

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Geometry find the triangle side
How long is this side?

Answers

What?! I know how to do Pythagorean theorem but what in the world is this???

63, 00, 22,------? solved the next number

Answers

The next number in the sequence is 47, 1, and 27.

What is a number series?

A series of numbers is called a number series. We must identify the rules that lead to the formation of a number series in order to answer the questions about number series. The questions that might arise from these topics are as varied as these series themselves.

One possible pattern in this sequence is that each number is the reverse of the sum of the digits of the previous number, followed by the next odd number. Applying this pattern to the given sequence, we have:

The reverse of 63 is 36. The sum of the digits of 63 is 6 + 3 = 9. Therefore, the next number is 36 + 9 = 45, followed by the next odd number, which is 47. So the next number is 47.

The reverse of 00 is 00. The sum of the digits of 00 is 0 + 0 = 0. Therefore, the next number is 00 + 0 = 0, followed by the next odd number, which is 1. So the next number is 1.

The reverse of 22 is 22. The sum of the digits of 22 is 2 + 2 = 4. Therefore, the next number is 22 + 4 = 26, followed by the next odd number, which is 27. So the next number is 27.

Therefore, the next number in the sequence is 47, 1, 27.

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You and a friend are hiking and find yourselves near the top of a waterfall. There is a path to hike down that takes 1.8 miles to reach the bottom safely and go swimming. There is also a path that is 1.3 miles down to a great place to eat lunch. Your friend wants to stay at the top of the waterfall and fly his drone overhead to take pictures from the sky. A drone is a flying robot that can be remotely controlled with computer software or technology. Draw a vertical number line to help you answer the questions.

Answers

Part A: the drone would need to fly up 1.3 miles  Part B:  the drone would need to fly up 1.8 miles. Part C:  the value of zero represents the top of the waterfall . Part D: the absolute value of -1.8 is the same as the absolute value of 1.8, we have shown that you hiked the same distance in both directions.

Describe Distance?

It can be measured in various units such as meters, kilometers, feet, miles, etc. In mathematics, the distance between two points in a coordinate plane can be calculated using the distance formula, which is derived from the Pythagorean theorem. The distance formula is:

d = √[(x2 - x1)² + (y2 - y1)²]

Where (x1, y1) and (x2, y2) are the coordinates of the two points and d is the distance between them

Part A: The distance from the top of the waterfall to the place where you eat lunch is 1.3 miles, so the drone would need to fly up 1.3 miles

Part B: The distance from the top of the waterfall to the place where you go swimming is 1.8 miles, so the drone would need to fly up 1.8 miles

Part C: In this problem, the value of zero represents the top of the waterfall where you and your friend are currently located.

Part D: Let x be the distance you hiked to go swimming, and let y be the distance you hiked to go back to the top to meet your friend. Then, the total distance you hiked is the sum of the absolute values of x and y, which can be written as |x| + |y|. Since you hiked down 1.8 miles to go swimming and then hiked back up 1.8 miles to the top, x = -1.8 and y = 1.8. Substituting these values, we get |(-1.8)| + |1.8| = 1.8 + 1.8 = 3.6. Since the absolute value of -1.8 is the same as the absolute value of 1.8, we have shown that you hiked the same distance in both directions.

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The complete question is :

Write the equation of the line that is perpendicular to y = -1/6x-2 and passes through the point (-2,-1)

Answers

Therefore , the solution of the given problem of equation comes out to be  y = 6x + 11.

How do equations work?

Mathematical formulas frequently use the same letter to try to impose uniformity between two claims. Many variable academic numbers are shown to be equal using mathematical equations, also known as assertions. The normalise divides 12 and b + 6 into two parts using the result y + 6 = 12 as an illustration. It is possible to determine the connection between each sign component and the number of lines. The significance of a symbol usually contradicts itself.

Here,

In slope-intercept form, the provided equation y = -1/6x - 2 has a slope of -1/6. Consequently, this line's perpendicular inclination is as follows:

=> m2 = -(1/-1/6) = 6

Now that we know the desired line's slope and the spot through which it passes (-2, -1). To determine the solution of a linear equation, we can use its point-slope form:

=> y - y1 = m(x - x1) (x - x1)

where m is the slope 6 and (x1, y1) is the position (-2, -1). By replacing these numbers, we obtain:

=> y + 1 = 6(x + 2) y + 1

=> 6x + 12 y + 1

=> 6x + 11 y - (-1)

=> 6(x - (-2))

As a result, the equation for the line passing through the position (-2, -1) and perpendicular to y = -1/6x - 2 is y = 6x + 11.

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Bob's Gift Shop sold 550 cards for Mother's Day. One salesman, Arun, sold 2% of the cards sold for Mother's Day. How many cards did Arun sell?

Answers

Answer:

55 cards

Step-by-step explanation:

In a board game, Maliq gets x points for landing on a red space, 2x points for landing on a blue space, and 5x points for going all the way around the board.He lands on 21 red spaces,19 blue spaces, and goes around the board twice, for a total of 21x+19 x 2x + 2 x 5x points. Which expression also represents Maliq's total points?

Answer Choices

A. (21+19)2x + 10x

B. 42x

C. 69x

D. (21+ 19 +2)(x+ 2x+5x)

Answers

Therefore , the solution of the given problem of  expressions comes out to be option C. 69x is the right response.

What is an expression?

Calculations like multiplying, dividing, joining, and presently removing are required. If they were put together, it would say: An equation, some statistics, and a mathematical formula A statement of truth is composed of values, components, and mathematical processes like additions, subtractions, errors, subdivisions, and arithmetic formulas. Words and phrases can be evaluated and analysed.

Here,

The formula 21x + 19(2x) + 2(5x) can be made simpler as follows:

=> 21x + 38x + 10x = 69x

Maliq's total scores can therefore be written as 69x.

To determine which decision is equivalent to 69x, we can also look through the answer options.

A.

=> (21+19)2x + 10x = 40(2x) + 10x = 80x + 10x = 90x,

which is not equivalent to 69x..

B. 42x and 69x are not equal.

C. 69x is the same as 69x.

D. The sum of

=> (21+19+2)(x+2x+5x) = 42(8x) = 336x does not equal 69x.

Therefore, C. 69x is the right response.

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0
T
1
0 10
لسل
5
8
Centimeters
3
2
2
Millimeters
4 5
20 30 40 50
There is a proportional relationship between any length
measured in centimeters (cm) and the same length
measured in millimeters (mm).
Use the ruler to help you complete the table.
Length (mm)
884
25
240
699.1
Length (cm)
What is the constant of proportionality?
ONDE
Submit
Sign out
US

Answers

The proportionality constant (mm to cm) is 10 and the complete table is -

9 cm                 90 mm

12.5 cm             125 mm

50 cm               500 mm

88.49 cm          884.9 mm

What is proportional relationship?

A proportional relationship between two variables {x} and {y} means that if {x} increases, then {y} increases with it proportionally.

Given is a proportional relationship between two scales.

{ 1 } -

We can write the proportionality constant (mm to cm) as -

{k} = (20 - 10)/(2 - 1)

{k} = 10

{ 2 } -

We can write the complete table as -

9 cm                  9 x 10 = 90 mm

12.5 cm             12.5 x 10 = 125 mm

50 cm               50 x 10 = 500 mm

88.49 cm          88.49 x 10 = 884.9 mm

Therefore, the proportionality constant (mm to cm) is 10 and the complete table is -

9 cm                 90 mm

12.5 cm             125 mm

50 cm               500 mm

88.49 cm          884.9 mm

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Translation: 4 left and 2 down

Answers

Answer:

Step-by-step explanation:

I first move the dot left by 4 by counting them. Then move it down by 2.

Answer: So What you want to do is Move left 4 and down 2, then do it again

Step-by-step explanation:

.Nike sells a sweatshirt for $65. They paid $40 for the sweatshirt from the factory. Find the PERCENT of INCREASE in the price.

Answers

Answer:

To find the percent increase in price, we need to calculate the difference between the original price and the new price, and then express that difference as a percentage of the original price.

The original price of the sweatshirt was $40, and the new price is $65, so the difference is:

$65 - $40 = $25

To express this as a percentage of the original price, we divide the difference by the original price and multiply by 100:

($25 / $40) x 100% = 62.5%

Therefore, the percent increase in the price of the sweatshirt is 62.5%.

Francine has cut a piece of paper into a triangle but did not make a perpendicular cut find the area of piece of paper to the nearest tenth of a square centimeter

Answers

Answer: Without a perpendicular cut, we cannot determine the height of the triangle directly. However, we can use the Pythagorean Theorem to find it indirectly.

Let's assume that Francine has cut the paper into a right triangle ABC, where AB and BC are the legs of the triangle, and AC is the hypotenuse. Let x be the length of AB and y be the length of BC. We can then use the Pythagorean Theorem to find the length of AC:

AC^2 = AB^2 + BC^2

We don't know the exact values of AB and BC, but we do know that the area of the triangle is given by:

Area = (1/2) * AB * BC

We can use this formula to find the area in terms of x and y:

Area = (1/2) * x * y

Now we need to eliminate one of the variables (either x or y) so that we can express the area in terms of the other variable and AC. We can do this by rearranging the Pythagorean Theorem to solve for one of the variables:

x^2 = AC^2 - y^2

y^2 = AC^2 - x^2

Let's solve for y:

y^2 = AC^2 - x^2

y = sqrt(AC^2 - x^2)

Now we can substitute this expression for y into the formula for the area:

Area = (1/2) * x * sqrt(AC^2 - x^2)

To find the maximum possible area, we need to maximize this expression. We can do this using calculus, by taking the derivative of the expression with respect to x, setting it equal to zero, and solving for x. However, since we only need an approximate answer to the nearest tenth of a square centimeter, we can use trial and error to find the value of x that gives the maximum area. We can start by trying different values of x, and using a calculator to evaluate the expression and find the corresponding area.

Let's try a few values of x:

If x = 0, then the area is 0.

If x = AC/2 (i.e., if the triangle is isosceles), then the area is (1/8) * AC^2 * sqrt(3), which is approximately 0.433 * AC^2.

If x = AC/sqrt(3) (i.e., if the triangle is equilateral), then the area is (1/4) * AC^2 * sqrt(3), which is approximately 0.433 * AC^2.

Since the area is maximized when the triangle is equilateral, we can assume that the piece of paper is an equilateral triangle, and use the formula for the area of an equilateral triangle:

Area = (sqrt(3)/4) * side^2

where side is the length of one of the sides of the triangle. To find the side length, we need to know the length of AC. We don't know the exact value of AC, but we can estimate it by measuring the length of the longest side of the piece of paper (assuming that it is the hypotenuse of the triangle). Let's say that the longest side is 30 cm. Then, by the Pythagorean Theorem, we can find the length of the other two sides:

x^2 + y^2 = 30^2

x^2 + (sqrt(AC^2 - x^2))^2 = 30^2

2x^2 + AC^2 - x^2 = 900

x^2 = (900 - AC^2)/

Step-by-step explanation:

What is the monthly interest rate if the annual interest rate is 24%?

Answers

Answer: 2%

Step-by-step explanation:

annual interest rate is based off a year
monthly is based off month
there are 12 months in a year, so to find the monthly interest you just divide the annual interest by 12.

what are three ratios equal to 9.5/25?

Answers

Answer:

9.50 : 25

19 : 50

28.50 : 75

Step-b-step explanation:

hElp!!! quick!!!! p.s i’ll give brainliest

Answers

The required from Frack's city rate of miles, Seattle and Orlando are less expensive while Miami and Honolulu are more expensive.

What is the rate of change?

Rate of change is defined as the change in value with rest to another value is called rate of change.

Here,
In Frank's city,
y = 0.3x + 2

The rate per mile is represented by the slope of the linear equation.
So,
m = $0.3 per mile

For Seattle

The rate per mile is given by the slope of the relation shown in the graph. So,
m = 3.2 - 2.4 / 6 - 2
m = $0.2 per mile

Similarly,
For Orlando, m = $0.25 per miles
For Miami, m = $0.4 per mile
For Honolulu m = $0.75 per mile

Thus, the required from Frack's city rate of miles, Seattle and Orlando are less expensive while Miami and Honolulu are more expensive.

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Which expression represents the prime factorization of 192?
A. 2 x 2 x 2 x 2 x 12
B. 2 x 2 x 2 x 2 x 2 x 3
C. 3 x 2 x 2 x 2 x 2 x 2 x 2
D. 2 x 2 x 2 x 2 x 2 x 3 x 3

Answers

Answer:

c

Step-by-step explanation:

2 x 2=4

2 x 2 =4
2 x 2 = 4

4 ^3 = 64

48 x 3 =192
Or:
192/2 = 96
96/2=48
48/2 = 24

24/2= 12
12/3=4

4/2=2
2 x 2 x 2 x 2 x 2 x 2 x 3

Find the total year costs for 5
years, 10
years, and 15
years for purchasing and renting a house. Then compare your answers to those in the following table.

Length of Time Purchase Home Rent Home
5
years $78,559.20
$54,900.00
10
years $127,118.40
$115,200.00
15
years $175,677.60
$180,900.00

Purchase Home

Total 5-
year cost: $30,000.00+5×12×$809.32=$78,559.20
Total 10-
year cost: $30,000.00+10×12×$809.32=$127,118.40
Total 15-
year cost: $30,000.00+15×12×$809.32=$175,677.60
Rent Home

Total 5-
year cost: (4×12×$900)+(1×12×$975)=$54,900
Total 10-
year cost: (4×12×$900)+(4×12×$975)+(2×12×$1050)=$115,200
Total 15-
year cost: (4×12×$900)+(4×12×$975)+(4×12×$1050)+(3×12×$1125)=$180,1900
Recall the pros and cons of buying a house and which conditions make it better to to purchase a home. Also, think about the pros and cons of renting a house and which conditions make it better to rent. Use this information along with the total costs you found to answer the following prompts. Make sure to write your answer in complete sentences.

Does renting or purchasing makes the most sense for the Bainters if they live in the house 1
year? 5
years? 10
years? 15
years?
For each interval, explain why you think the Bainters should rent or purchase a home. Use mathematical evidence to support your conclusions.

Answers

The table makes it abundantly evident that buying costs less than renting does. Buying a house is therefore better over the course of 15 years. By buying a home instead of renting one, you can save $5,222.4.

How are lengths determined?

Every object's length can be determined using measuring tools like a ruler, measuring tape, etc. For example, a ruler may be utilized to measure the length in inches of a pencil. A foot scale can be used in a classroom to gauge the heights of the students.

Step 1

Buying a home is more advantageous if someone is looking for somewhere to live for an extended period of time. Second, if a person buys the home, it can be sold at a higher price in the future since rental prices after a specified term and after a few years, say 10 or 15, cumulative rental charges become greater than the initial purchase price.

However, according to the above table, renting a property is preferable if the need for the home is for a shorter duration, like fewer then 5 or 10 years, in order to save money.

Step 2

1 year

The cost for Purchasing a house = 30,000 + 1 × 12 × 809.32 = $39,711.84

The cost of renting a house = 1 × 12× 900 = $10,800

So, it is evident that there's a difference between buying and renting a home of $28,911.84. So, renting a home is preferable.

Step 3

5 year

The cost of purchasing the home for five years is listed as $78559.20, whereas the cost of renting the home for five years was $54,900.

Again, renting is more affordable than buying. By renting a home, one could save $23,659.2 (78559.20-54900).

10 years

The cost of purchasing the home over 10 years is shown as $127,118.40, while the cost of renting the home for 10 years was $115,200.

Renting is less expensive than buying. Yet, buying a house is advantageous if it can be bought or rented out; otherwise, leasing one is advantageous.

Step 4

15 years

The table clearly shows that purchasing is less expensive than renting. Over the period of fifteen years, purchasing a home is therefore preferable. You can save $5,222.4 by buying a house instead of renting one.

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I swear mom write the ratio in lowest terms in order to decide whether the proportion is true or false 100/210 = 290/340

Answers

False, the given two proportions are not equal.

What are ratios and proportions?

In this section, the terms ratio and percentage are defined. Both ideas play a significant role in mathematics. Many examples where the notion of the ratio is highlighted may be found in daily life, such as the rate of speed (distance/time) or price (rupees/meter) of a substance.

An equation known as proportion shows that the two ratios presented are equal to one another.

The two given proportions are:

100/210 = 290/340

Simplifying the two we have:

100/210 = 10/21

290/340 = 29/34

We see that the simplified form of the two proportions are different.

Hence, False, the two proportions are not equal.

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From the following data realting to a company calculate:
(I) the break even sales ; (ii) sales required to earn a profit of rupees 6000 per period

Answers

(I) Break even sales: S = 40,000

(ii) Sales needed to earn a profit  Rs 6000 per period: S = Rs. 45,000.

Explain about the Break even sales?The revenue level at which a company makes no profit is known as break even sales. This sales figure completely covers every single one of the variable expenses related to the sales as well as the business's underlying fixed costs.

The formula for the Break even sales is:

(S‐v) /S= F + P  

s x P/V Ratio = Contribution

First calculate P/V Ratio:

P/V Ratio = Contribution/sales x 100

P/V Ratio = (40‐24)/40 x 100

P/V Ratio= 16/40 x 100

P/V Ratio = 40%

(I) Break even sales  

S x P/V Ratio = Fixed Cost

For break even sales, deposition equals fixed cost.

Thus,

Put the values:

S x 40/100 = 16,000

S = 16,000 x 100 / 40

S = 40,000

S = 1000 units

(II) Sales to gain a profit of Rs. 6,000

S x P/V Ratio = F + P

Put the values:

S x 40/100 = 16000 + 2000

S = 18,000 x 100/40  

S = Rs. 45,000

S =  1125 units

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For the geometric series –8, 4, –2, . . . find the following sums:

a. s3

b. s6

c. s25

d. S, the sum of the series

Answers

geometric series:

[tex]\dfrac{4}{-8} = - \dfrac{1}{2}[/tex]

[tex]\dfrac{-2}{4} = - \dfrac{1}{2}[/tex]

[tex]\implies r = - \dfrac{1}{2} \ \ and \ \ a_{1} = -8[/tex]

[tex]\boxed{S_{n} = \dfrac{a_{1}\cdot (1 - {r}^{n}) }{1 - r}}[/tex]

a. n = 3

[tex]S_{3} = - 8 + 4 - 2 = 4 - 10 = \bf -6\\[/tex]

b. n = 6

[tex]S_{6} = \dfrac{(-8)\cdot \Big(1 - { \Big(- \dfrac{1}{2}\Big)}^{6}\Big) }{1 - \Big( - \dfrac{1}{2}\Big)} = \dfrac{(-8)\cdot \Big(1 - \dfrac{1}{2^{6}}\Big)}{1 + \dfrac{1}{2}} = \dfrac{-8 + \dfrac{1}{2^{3}}}{\dfrac{3}{2}} =\\[/tex]

[tex]= \dfrac{-64+1}{2^{3}} \cdot \dfrac{2}{3} = -\dfrac{63}{2^{2}(3)} = \bf -\dfrac{21}{4}[/tex]

c, n = 25

[tex]S_{25} = \dfrac{(-8)\cdot \Big(1 - { \Big(- \dfrac{1}{2}\Big)}^{25}\Big) }{1 - \Big( - \dfrac{1}{2}\Big)} = \dfrac{(-8)\cdot \Big(1 + \dfrac{1}{2^{25}}\Big)}{1 + \dfrac{1}{2}} = - \dfrac{8 + \dfrac{1}{2^{22}}}{\dfrac{3}{2}} =\\[/tex]

[tex]= - \dfrac{8 + \dfrac{1}{2^{22}}}{\dfrac{3}{2}} = - \dfrac{1 + 2^{25}}{2^{22}} \cdot \dfrac{2}{3} = \bf - \dfrac{1 + 2^{25}}{(3)2^{21}}\\[/tex]

A company sells doughnuts. They incur a fixed cost of $25,000 for rent, insurance, and other expenses. It costs $0.25 to produce each doughnut. Let x = number of doughnut produced. Find the Variable cost.

Answers

The variable cost for x doughnuts produced is 0.25x.

What is variable cost?

Costs that vary according on how much of an item or service a company produces are known as variable costs.

The fixed cost for the company is $25,000, which is a constant amount that does not depend on the number of doughnuts produced. The variable cost, on the other hand, is the cost that varies with the number of doughnuts produced.

Since it costs $0.25 to produce each doughnut, the variable cost for x doughnuts can be calculated as 0.25x.

Therefore, the variable cost for x doughnuts produced is 0.25x.

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მოც:
უ.გ.
m(CuO) = 10გ
m(HNO3) = 12,6გ
m(Cu(NO3)2) = ?
ამოხსნა:

Answers

Answer:

შეგვიძლია ამოვიღოთ რომ CuO და HNO3 რეაგირებენ და ქებისყარის შედეგად Cu(NO3)2 იქნება წარმოდგენისათვის.

სახელში მოცემული მასალების მიხედვით, შეგვიძლია ამოვიღოთ რომ 1 მოლი CuO რეაგირებულია 4 მოლი HNO3-თი, ანუ შესაბამისად, მასალების მიხედვით:

m(CuO) / M(CuO) = n(CuO) = n(HNO3) = m(HNO3) / M(HNO3)

10 გ / 79,55 გ/მოლი = 0,1256 მოლი CuO = 0,1256 მოლი HNO3 = 12,6 გ / 63,01 გ/მოლი

რეაქციის შემდეგ მივიღებთ, რომ 1 მოლი CuO-სთვის გამოვიყენებთ 4 მოლი HNO3-ს, რაც შემდეგ მანამდე გადავაკეთებთ მათ მიერ რეაქციას, ანუ:

n(Cu(NO3)2) = n(CuO) = 0,1256

Step-by-step explanation:

Note: Figure is not drawn to scale. If x = 9 units, y = 3 units, and h = 7 units, find the area of the rhombus shown above using decomposition.

Answers

The area of the rhombus is twice the area of one triangle:

A_rhombus = 2 * A

A_rhombus = 2 * (21/4)√10

A_rhombus = 21/2 * √10

The area equation is what.

A form's area is determined using the surface. To calculate the area of a rectangle or square, multiply its length and width. A is x times y in size.

To find the area of the rhombus, we can decompose it into two congruent triangles and find the area of one triangle, then multiply it by 2 to get the area of the whole rhombus.

The height of each triangle is h = 7 units, and the length of the base of each triangle is half the length of a diagonal of the rhombus. Using the Pythagorean theorem, we can find the length of the diagonal:

d² = x² + y²

d² = 9² + 3²

d² = 90

d = √90 = 3√10

Therefore, the length of the base of each triangle is 1/2 * 3√10 = (3/2)√10 units.

The area of one triangle is:

A = (1/2) * base * height

A = (1/2) * (3/2)√10 * 7

A = (21/4)√10

The area of the rhombus is twice the area of one triangle:

A_rhombus = 2 * A

A_rhombus = 2 * (21/4)√10

A_rhombus = 21/2 * √10

Therefore, the area of the rhombus is 21/2 * √10 square units.

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9. Leroy received a stamp for his collection as a gift. When he received the stamp, it was worth $14.50.
The value of the stamp increases by 2% each year.
a. Write an equation for the value of the stamp V after t years.
b. Use the equation to predict the value of the stamp after 18 years.

Answers

Therefore, the stamp's estimated value is $21.54 considering that when he first got it, it was only worth $14.50.

What is equation ?

A mathematical assertion that two expressions are equivalent is known as an equation. The equal symbol (=) separates the two sides, which are labeled as the left-hand side (LHS) and the right-hand side (RHS). The equation must have identical values on both sides, and it is frequently used to determine an unknown variable's value.

Numerous mathematical processes, such as addition, subtraction, multiplication, division, exponents, logarithms, and more, can be used in equations.

given

a. The formula for the stamp's worth V after t years is as follows:

[tex]V = 14.50(1 + 0.02)^t[/tex]

where t is the period of time since Leroy got the stamp, and 0.02 denotes a 2% annual increase in value.

b. We enter t = 18 into the equation to estimate the stamp's value after 18 years:

[tex]V = 14.50(1 + 0.02)^{18[/tex]

[tex]V = 14.50(1.02) (1.02)^{18[/tex]

V = 14.50(1.485) (1.485)

V = 21.54

Therefore, the stamp's estimated value is $21.54 considering that when he first got it, it was only worth $14.50.

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Compare center and variations of histograms 1 questions with part A, B, C, D PLEASE HELP ME 40 POINTS SUPER EASYY

Answers

The requried (a) median for the chocolate candy and nonchocolate candy sales are $3040 and $1566.5 respectively. (b) The range for the chocolate candy sales, the range is ($1941, $3454). For the non-chocolate candy sales, the range is (from 1,096 dollars to 2,892 dollars).

What is a histogram?

A histogram is a graphical representation of the distribution of a set of numerical data. It consists of a set of rectangles, where the area of each rectangle is proportional to the frequency (or count) of the observations falling within a particular interval, called a bin.

Here,
A. The interval for the median for each data set can be found by arranging the data in ascending order and finding the middle value. For the chocolate candy sales, the median falls in the interval of 2800-3,099 dollars. While for the Nonchocolate candy, it falls under 1300 -1599

The median for the chocolate candy sales  = $3040
The median for the Nonchocolate candy sales  = $1566.5

B. The range for each data set can be found by subtracting the minimum value from the maximum value. For the chocolate candy sales, the range is ($1941, to $3454). For the non-chocolate candy sales, the range is (from 1,096 dollars to 2,892 dollars).

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3x^2+42x+72 Student 1 Student 2 (X+2)(x+12). 3(x+2)(x+12) Which answer is the correct answer? What was wrong with that is incorrect? Explain what they did wrong. What important note can you make about factoring that you’ve learned from mistakes made on this problem?

Answers

Answer:

3(x + 12)(x + 2)

Step-by-step explanation:

Given

3x² + 42x + 72 ← factor out 3 from each term

= 3(x² + 14x + 24) ← factor the quadratic

Consider the factors of the constant term (+ 24) which sum to give the coefficient of the x- term.

The factors are + 12 and + 2, since

12 × 2 = 24 and 12 + 2 = 14, thus

x² + 14x + 24 = (x + 12)(x + 2) and

3x² + 42x + 72

= 3(x + 12)(x + 2) ← in factored form

What is the domain and range of this function F(x)=log2(x-6)

Answers

The domain and the range of the function f(x) = log₂(x) are (6, ∞) and [0, ∞)

How to determine the domain and the range

The equation of the function is given as

f(x) = log₂(x)

In this case, the argument of the logarithm is x - 6 must be greater than 0 for the function to be defined.

So, we have

x - 6 > 0

Adding 6 to both sides of the inequality, we get:

x > 6

This means that

Domain: (6, ∞)

The range of a logarithmic function is the set of all possible output values of the function.

In this case, the base of the logarithm is 2, which means that the function will not take negative values

Therefore, the range of the function is:

Range: [0, ∞)

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How much would it cost to furnish a square room of 5m at N5.00 per square metre
(I need this answer before 6 march)

Answers

It would cost N125.00 to furnish a square room of 5m at N5.00 per square meter.

Describe the square meter.

A square meter is a unit of measurement that denotes the surface area of a two-dimensional object or surface that is one metre long and one meter broad. It is frequently used to determine the dimensions of rooms, structures, and other areas as well as the surface area of land or other objects. The imperial method of measurement converts one square metre into 10.764 square feet. Science, engineering, and other fields frequently utilise the square metre, a core unit of the International System of Units (SI).

The area of the room is:

Area = 5m x 5m = 25 square meters

Then, we multiply the area by the cost per square meter:

Cost = 25 square meters x N5.00 per square meter = N125.00

Hence, it would cost N125.00 to furnish a square room of 5m at N5.00 per square meter.

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Ray is purchasing a laptop that is on sale for 25% off. He knows the function that represents the sale price of his laptop is c(p) = 0. 75p, where p is the original price of the laptop. He also knows he has to pay 8% sales tax on the laptop. The price of the laptop with tax is f(c) = 1. 08c, where c is the sale price of the laptop. Determine the composite function that can be used to calculate the final price of ray's laptop.

Answers

Answer:

the final price of Ray's laptop is 89.1% of the original price.

Step-by-step explanation:

To find the composite function that can be used to calculate the final price of Ray's laptop, we need to find the composition of the two functions given:

f(c) = 1.08c (function for calculating the price of the laptop with tax)

c(p) = 0.75p (function for calculating the sale price of the laptop)

We can find the composite function f(c(p)) by substituting c(p) into the formula for f(c):

f(c(p)) = 1.08c(p)

Substituting c(p) with 0.75p, we get:

f(c(p)) = 1.08(0.75p)

Simplifying, we get:

f(c(p)) = 0.81p

Therefore, the composite function that can be used to calculate the final price of Ray's laptop is f(c(p)) = 0.81p.

This means that to find the final price of the laptop, we need to take the original price, multiply it by 0.75 to get the sale price, and then multiply the sale price by 1.08 to add the sales tax. In other words, the final price is:

final price = f(c(p)) = 0.81p = 1.08(0.75p)

final price = 0.81p + 0.081p

final price = 0.891p

Therefore, the final price of Ray's laptop is 89.1% of the original price.

O.5% as a fraction and decimal

Answers

Answer: As a fraction: 1/2

              As a decimal: 0.005

Step-by-step explanation:

FRACTION:

To figure out how to write 0.5% as a fraction, all you need to know is that 0.5 = to a half, or 1/2 because 0.5 is half of 1.

DECIMAL:

0.5% as a decimal form is 0.005 because it is 1000 times less than 1, so you move the 0 3 times right.

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