Solve (t-3)^2=6
The arrow is at a height of 48 ft after approx. ___ s and after ___ s.

Answers

Answer 1

The arrow is at a height of 48 ft after approx. 3 - √6 s and after 3 + √6 s.

To find the time it takes for the arrow to reach a height of 48 ft, we can use the formula for the height of the arrow:

s = v0t - 16t^2

Here, s represents the height of the arrow, v0 is the initial velocity, and t is the time.

Given that the initial velocity, v0, is 96 ft/s and the height, s, is 48 ft, we can set up the equation:

48 = 96t - 16t^2

Now, let's solve this equation to find the time it takes for the arrow to reach a height of 48 ft.

Rearranging the equation:

16t^2 - 96t + 48 = 0

Dividing the equation by 16 to simplify:

t^2 - 6*t + 3 = 0

We now have a quadratic equation in the form of at^2 + bt + c = 0, where a = 1, b = -6, and c = 3.

Using the quadratic formula:

t = (-b ± √(b^2 - 4ac)) / (2a)

Plugging in the values:

t = (6 ± √((-6)^2 - 413)) / (2*1)

t = (6 ± √(36 - 12)) / 2

t = (6 ± √24) / 2

Simplifying the square root:

t = (6 ± 2√6) / 2

t = 3 ± √6

Therefore, the arrow reaches a height of 48 ft after approximately 3 + √6 seconds and 3 - √6 seconds.

In summary, the arrow takes approximately 3 + √6 seconds and 3 - √6 seconds to reach a height of 48 ft, assuming an initial velocity of 96 ft/s.

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Note the complete question is

The height of an arrow shot upward can be given by the formula s = v0*t - 16*t², where v0 is the initial velocity and t is time.How long does it take for the arrow to reach a height of 48 ft if it has an initial velocity of 96 ft/s?  

Solve (t-3)^2=6

The arrow is at a height of 48 ft after approx. ___ s and after ___ s.


Related Questions

What is Navems manufacturing cycle efficiency (MCE) for its elevators

Answers

Navern Corporation's manufacturing cycle efficiency (MCE) for its elevators is approximately 11.36%.

How to calculate the value

Value-added time is the time spent on activities that directly add value to the product.

Value-added time: Process time = 5 days (the process of manufacturing the elevators)

Total cycle time: Wait time + Inspection time + Process time + Move time + Queue time

= 12 days + 12 days + 5 days + 6 days + 9 days

= 44 days

MCE = (Value-added time / Total cycle time) * 100

= (5 days / 44 days) * 100

≈ 11.36%

Therefore, Navern Corporation's manufacturing cycle efficiency (MCE) for its elevators is approximately 11.36%.

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NO LINKS!! URGENT HELP PLEASE!!!
11. Write the equation for the graph

Answers

Answer:  [tex]\text{y} = \sqrt{4(\text{x}+5)}-1[/tex]

This is the same as writing y = sqrt(4(x+5)) - 1

===============================================

Explanation:

The given graph appears to be a square root function.

The marked points on the curve are:

(-4,1)(-1,3)(4,5)

Reflect those points over the line y = x. This will have us swap the x and y coordinates.

(-4,1) becomes (1,-4)(-1,3) becomes (3,-1)(4,5) becomes (5,4)

Recall the process of reflecting over y = x means we're looking at the inverse. The inverse of a square root function is a quadratic.

----------

Let's find the quadratic curve that passes through (1,-4), (3,-1) and (5,4).

Plug the coordinates of each point into the template y = ax^2+bx+c.

For instance, plug in x = 1 and y = -4 to get...

y = ax^2+bx+c

-4 = a*1^2+b*1+c

-4 = a+b+c

Do the same for (3,-1) and you should get the equation -1 = 9a+3b+c

Repeat for (5,4) and you should get 4 = 25a+5b+c

We have this system of equations

-4 = a+b+c-1 = 9a+3b+c4 = 25a+5b+c

Use substitution, elimination, or a matrix to solve that system. I'll skip steps, but you should get (a,b,c) = (1/4, 1/2, -19/4) as the solution to that system.

In other words

a = 1/4, b = 1/2, c = -19/4

We go from y = ax^2+bx+c to y = (1/4)x^2+(1/2)x-19/4

----------

Next we complete the square

y = (1/4)x^2+(1/2)x-19/4

y = (1/4)( x^2+2x )-19/4

y = (1/4)( x^2+2x+0 )-19/4

y = (1/4)( x^2+2x+1-1 )-19/4

y = (1/4)( (x^2+2x+1)-1 )-19/4

y = (1/4)( (x+1)^2-1 )-19/4

y = (1/4)(x+1)^2- 1/4 - 19/4

y = (1/4)(x+1)^2 + (-1-19)/4

y = (1/4)(x+1)^2 - 20/4

y = (1/4)(x+1)^2 - 5

The equation is in vertex form with (-1,-5) as the vertex. It's the lowest point on this parabola. Placing it into vertex form allows us to find the inverse fairly quickly.

----------

The last batch of steps is to find the inverse.

Swap x and y. Then solve for y.

y = (1/4)(x+1)^2 - 5

x = (1/4)(y+1)^2 - 5

x+5 = (1/4)(y+1)^2

(1/4)(y+1)^2 = x+5

(y+1)^2 = 4(x+5)

y+1 = sqrt(4(x+5))

y = sqrt(4(x+5)) - 1

I'll let the student check each point to confirm they are on the curve y = sqrt(4(x+5)) - 1.

You can also use a tool like GeoGebra to verify the answer.

Simplify (2x-3)(5x squared-2x+7)

Answers

To simplify the expression (2x-3)(5x^2-2x+7), we can use the distributive property.

First, multiply 2x by each term inside the second parentheses:

2x * 5x^2 = 10x^3

2x * -2x = -4x^2

2x * 7 = 14x

Next, multiply -3 by each term inside the second parentheses:

-3 * 5x^2 = -15x^2

-3 * -2x = 6x

-3 * 7 = -21

Combine all the resulting terms:

10x^3 - 4x^2 + 14x - 15x^2 + 6x - 21

Now, combine like terms:

10x^3 - 19x^2 + 20x - 21

So, the simplified expression is 10x^3 - 19x^2 + 20x - 21.

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4x-3y=18 determine the missing coordinates in ordered pair

Answers

The missing coordinate in the ordered pair (5, ?) that satisfies the equation 4x - 3y = 18 is y = 2/3. Hence, the complete ordered pair is (5, 2/3).

To determine the missing coordinate in the ordered pair (5, ?) that satisfies the equation 4x - 3y = 18, we can substitute the given x-coordinate, which is 5, into the equation and solve for y.

Let's substitute x = 5 into the equation:

4(5) - 3y = 18

20 - 3y = 18

Now, we can solve for y by isolating it on one side of the equation:

-3y = 18 - 20

-3y = -2

Divide both sides of the equation by -3 to solve for y:

y = -2 / -3

y = 2/3

Therefore, the missing coordinate in the ordered pair (5, ?) that satisfies the equation 4x - 3y = 18 is y = 2/3. Hence, the complete ordered pair is (5, 2/3).

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Question

Following equation. 4x-3y=18 Determine the missing coordinate in the ordered pair (5,?) so that it will satisfy the given equation.

Use the image below to answer the following question. What relationship do the ratios of sin x° and cos y° share?

A right triangle is shown. The two angles that are not 90 degrees are marked x and y. The leg across from angle y measuring 4, another leg across from angle x measuring 3, and the hypotenuse measuring 5

The ratios are both identical (three fifths and three fifths).
The ratios are opposites (negative three fifths and three fifths).
The ratios are reciprocals (three fifths and five thirds).
The ratios are both negative (negative five thirds and negative three fifths).

Answers

The ratios are both identical (three fifths and three fifths). Option A

How to determine the ratios

The ratios of sin x° and cos y° are given as;

sin θ = opposite/hypotenuse

cos θ = adjacent/hypotenuse

In the question given above, the value of adjacent is 5 and the value of perpendicular is 12.

By using Pythagoras theorem, we can find the value of the hypotenuse.

Hypotenuse² = Adjacent² + Perpendicular²

Hypotenuse² = 5² + 12²

Hypotenuse² = 25 + 144

Hypotenuse² = 169 = 13²

Hypotenuse = 13

The value of sin X° will be;

sin X =  5/13

cos Y = 5/13.

sin X° = cos Y° = 5/13

Therefore, both the ratios of sin x° and cos y° are equal and their value is 5/13.

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Complete question:

Use the image below to answer the following question. What relationship do the ratios of sin x° and cos y° share?

A right triangle is shown. The two angles that are not 90 degrees are marked x and y. The leg across from angle y measuring 4, another leg across from angle x measuring 3, and the hypotenuse measuring 5

The ratios are both identical (three fifths and three fifths).

The ratios are opposites (negative three fifths and three fifths).

The ratios are reciprocals (three fifths and five thirds).

The ratios are both negative (negative five thirds and negative three fifths).

3 1/3 divided by 1 1/5​

Answers

Answer:

25/9

Step-by-step explanation:

3 1/3 ÷ 1 1/5

3 1/3 = 10/3

1 1/5 = 6/5

10/3 ÷ 6/5 = 10/3 x 5/6 = 50/18 = 25/9

So, the answer is 25/9

(Exponents)

what is the meaning of the expression? 3v^4

Answers

Answer: The expression, 3v^4, means that the variable, v, is multiplied by itself 4 times (v * v * v * v) and then is multiplied after by the coefficient 3.

Step-by-step explanation:

Exponent indicates the number of times a number needs to be multiplied by itself.

For example if your given x^2

that simply means that the variable, x, is being multiplied by itself twice:

x * x

if your given 2z^9

that means that the variable, z, is first multiplied by itself nine times and after that it is multiplied by the coefficient, two.

Sarah wants to save $20,000 to use for a down payment on a home. She deposits some money into a 4-year certificate of deposit (CD) with an annual interest rate of 4.5% compounded monthly. How much does Sarah need to deposit in the CD to reach her goal of having $20,000 in 4 years? Round your final answer to the nearest dollar.

Hint: Use the formula PV=frac(S,sup((1+i),n)).


$12.583

$16,711

$4,785

$5,000

Answers

To reach Sarah's goal of having $20,000 in 4 years, we'll use the formula for the present value of a future sum (PV):

PV = FV / (1 + i)^n

Here, FV is the future value ($20,000), i is the interest rate per period (0.045/12), and n is the number of periods (4 years * 12 months/year).

PV = $20,000 / (1 + 0.045/12)^(4*12)

PV ≈ $16,711

So, Sarah needs to deposit approximately $16,711 into the 4-year CD to reach her goal of having $20,000 in 4 years. The answer is:

$16,711

Help with math problem please

Answers

the correct answer is b

The mean age of 7 boys is 12yrs. What is the total age of the boys?​

Answers

Answer:

total age = 84 years

Step-by-step explanation:

mean is calculated as

mean = [tex]\frac{total}{count}[/tex]

here count = 7 and mean = 12 , then

[tex]\frac{total}{7}[/tex] = 12 ( multiply both sides by 7 )

total = 7 × 12 = 84 years


60, 69, 79, 80, 86, 86, 86, 89, 90, 100
Which test score is an outlier?

60
69
90
100

Answers

The test score that is an outlier is 60. Option A

What is an outlier

A data point that dramatically deviates from the dataset's main pattern or trend is referred to as an outlier.

From the information given, we have that;

The score are;

60, 69, 79, 80, 86, 86, 86, 89, 90, and 100.

We can see that the outlier is 60.

This is due to the fact that all of the other scores, which range from 69 to 100, are considerably higher and closer in value.

The score of 60, however, is considerably lower than the others pupils.

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simplify 14√(27) - √(3)

Answers

To simplify the expression 14√27 - √3, we can simplify the radicals and then perform the subtraction:

First, let's simplify the radicals:

√27 = √(9 × 3) = √9 × √3 = 3√3

Now we can rewrite the expression:

14√27 - √3 = 14(3√3) - √3

Next, distribute the 14:

14(3√3) - √3 = 42√3 - √3

Finally, combine like terms:

42√3 - √3 = 41√3

So the simplified expression is 41√3.

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Answers

What’s your question?

NO LINKS!! URGENT HELP PLEASE!!!

9. Find the equation of the PARABOLA with a vertex at (-2, 6) and passing through the point (1, -3)

Answers

Answer:

y= -x²-4x+2

Step-by-step explanation:

write in vertex form

a(x-h)²+k

in our case h = -2 and k= 6

y=a(x+2)²+6

now we just need to solve for a. we know that when x= 1 y = -3. plug these values in and solve for a

-3= a(1+2)²+6

-9=9a

a= -1

thus the formula is -(x+2)²+6

generally, teachers want things in standard form, so expand the exponent and simplify.

-(x²+4x+4)+6

y= -x²-4x+2

Answer:

[tex]y = -x^2 - 4x + 2[/tex]

Step-by-step explanation:

The equation of a parabola in vertex form is:

[tex]y = a(x - h)^2 + k[/tex]

where (h, k) is the vertex of the parabola.

In this case, the vertex is (-2, 6), so h = -2 and k = 6.

We also know that the parabola passes through the point (1, -3).

Plugging these values into the equation, we get:

[tex]-3 = a(1 - (-2))^2 + 6[/tex]

[tex]-3 = a(3)^2 + 6[/tex]

-9 = 9a

a = -1

Substituting a = -1 into the equation for a parabola in vertex form, we get the equation of the parabola:

[tex]y = -1(x + 2)^2 + 6[/tex]

This equation can also be written as:

[tex]y = -x^2 - 4x -4+6\\y=x^2-4x+2[/tex]

PLEASE HELP ASAP Arrange the expressions in increasing order of their values.
(10⁰x 10¹ x 1¹⁰) (10 x 10¹) (10⁰+10¹+1¹⁰) (10⁰+10¹x 1¹⁰)

Answers

[tex]\underline{\underline{\purple{\huge\sf || ꪖꪀᦓ᭙ꫀ᥅}}}[/tex]

First, we can simplify each expression:

(10⁰x10¹x1¹⁰) = 10¹¹

(10x10¹) = 100

(10⁰+10¹+1¹⁰) = 1 + 10 + 1,000,000,000 = 1,000,000,011

(10⁰+10¹x1¹⁰) = 10¹⁰

Now we can arrange them in increasing order:

10¹¹ < 10¹⁰ < 100 < 1,000,000,011

So the correct order from smallest to largest is:

(10⁰x10¹x1¹⁰) (10⁰+10¹x1¹⁰) (10 x 10¹) (10⁰+10¹+1¹⁰)

or

(10¹¹) (10¹⁰) (100) (1,000,000,011)

5,10,15,20,25 what is the common difference

Answers

Answer:

The common difference in the given sequence is 5.

Step-by-step explanation:

The common difference in the sequence is 5 because they all add by 5 each time for example 5 + 5= 10 and 10+5=15

In a certain Algebra 2 class of 23 students 7 of them basketball and 2 of them play baseball

Answers

The algebra class of 14 students in the Algebra 2 class of 23 students do not play basketball or baseball.

The number of students in a certain Algebra 2 class of 23 students who play basketball and baseball is 9, given that 7 of them play basketball and 2 of them play baseball.

The number of students in the class who do not play basketball or baseball is given by the number of students who do not play basketball plus the number of students who do not play baseball and the students who do not play basketball or baseball.

However, since each student is either playing basketball or baseball or neither, we can say that the total number of students who do not play basketball or baseball is given by the number of students in the class minus the total number of students who play basketball or baseball.

Thus, the number of students who do not play basketball or baseball is given by:

23 - 9 = 14

Therefore, 14 students in the Algebra 2 class of 23 students do not play basketball or baseball.

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A wool suit, discounted by 20% for a clearance sale, has a price tag of $636. What was the suit’s original price?

Answers

The original price of the wool suit was $795.

Let's denote the original price of the wool suit as "P."

We know that the suit was discounted by 20%, which means the discounted price is 80% (100% - 20%) of the original price.

Given that the discounted price is $636, we can set up the following equation:

0.8P = $636

To find the original price, we need to solve for P. We can do this by dividing both sides of the equation by 0.8:

P = $636 / 0.8

P = $795

Therefore, the original price of the wool suit was $795.

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Kylie suspected that when people exercise longer, their body temperatures change. She randomly assigned people to exercise for
30
3030 or
60
6060 minutes, then measured their temperatures. The
18
1818 people who exercised for
30
3030 minutes had a mean temperature of

ˉ
30
=
38.
3


C
x
ˉ

30

=38.3

Cx, with, \bar, on top, start subscript, 30, end subscript, equals, 38, point, 3, degrees, start text, C, end text with a standard deviation

30
=
0.2
7


C
s
30

=0.27

Cs, start subscript, 30, end subscript, equals, 0, point, 27, degrees, start text, C, end text. The
24
2424 people who exercised
60
6060 minutes had a mean temperature of

ˉ
60
=
38.
9


C
x
ˉ

60

=38.9

Cx, with, \bar, on top, start subscript, 60, end subscript, equals, 38, point, 9, degrees, start text, C, end text with a standard deviation

60
=
0.2
9


C
s
60

=0.29

Cs, start subscript, 60, end subscript, equals, 0, point, 29, degrees, start text, C, end text.
Kylie wants to estimate the difference in the mean body temperature after exercising for the two amounts of time
(
30

min.

60

min.
)
(30min.−60min.)left parenthesis, 30, start text, m, i, n, point, end text, minus, 60, start text, m, i, n, point, end text, right parenthesis. Assume that the conditions for inference have been met.
Which of the following is an appropriate confidence interval for

30


60
μ
30

−μ
60

mu, start subscript, 30, end subscript, minus, mu, start subscript, 60, end subscript?
Choose 1 answer:

Answers

Therefore, an appropriate confidence interval for μ30−μ60μ30​−μ60​ (the difference in mean body temperature) would be −0.796−0.796 to −0.404−0.404 (rounded to the appropriate decimal places).

To estimate the difference in the mean body temperature after exercising for 30 minutes versus 60 minutes, we can construct a confidence interval. Since the conditions for inference have been assumed to be met, we can proceed with the following steps:

   Calculate the difference in sample means: xˉ30−xˉ60=38.3−38.9=−0.6xˉ30​−xˉ60​=38.3−38.9=−0.6.

   Determine the standard error of the difference, which is given by the formula:

   SE=(s302n30)+(s602n60)SE=(n30​s302​​)+(n60​s602​​)

Substituting the values, we have:

SE=(0.27218)+(0.29224)≈0.100SE=(180.272​)+(240.292​)  ​≈0.100.

   Choose an appropriate confidence level. Let's say we want a 95% confidence interval.

   Using the standard error, calculate the margin of error, which is given by multiplying the critical value (corresponding to the chosen confidence level) by the standard error. For a 95% confidence level, the critical value is approximately 1.96.

   Margin of Error = 1.96 * 0.100 ≈ 0.196.

   Construct the confidence interval by subtracting and adding the margin of error to the difference in sample means:

   −0.6−0.196−0.6−0.196 to −0.6+0.196−0.6+0.196.

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Solve for x and graph the answer on a number line
2

Answers

The solution to the system of inequalities in interval notation is [-2, 1].

How to solve the system of inequalities?

Based on the information provided in the image below, we have the following system of inequalities;

-12 < 3x - 6

-3 ≥ 3x - 6

By adding 6 to both sides of the equation (inequality), we have;

-12 < 3x - 6

-12 + 6 < 3x - 6 + 6

-6 < 3x

-2 < x

x > -2 (flip)

-3 ≥ 3x - 6

-3 + 6 ≥ 3x - 6 + 6

3 ≥ 3x

1 ≥ x

x ≤ 1

Therefore, the solution to the system of inequalities is given by:

-2 < x ≤ 1

In interval notation, we have [-2, 1].

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!

Answers

The scaled triangle will be larger than the initial size by a factor 2.

The scaled square will be smaller than the initial side by a factor 4

What is dilation?

Dilation refers to a transformation that changes the size of a geometric figure without altering its shape.

Dilation involves scaling an object by a certain factor, that might result in  enlarging or reducing its dimensions uniformly in all directions.

Based on the given diagram, the new length and size of the object is calculated as follows;

For the triangle, (measure the length with ruler)

new lengths = 2 times the original lengthoriginal length = 2 cm, new length = 4 cmthe new size of the triangle will increase by a factor 2

For the square; (measure the length with ruler)

new lengths = 0.25 times the original lengthoriginal length = 4 cm, new length = 2 cmthe new size of the square will decrease by a factor 4

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Given that x^2-4x + 1 = (x-p)- q for all values of x, find the value of p and the value of q

Answers

The values of p and q are 1 and 3, respectively.

Given the equation x^2-4x + 1 = (x-p)- q, we can compare the coefficients of the corresponding terms on both sides of the equation.

We compared the coefficients of the x^2 terms on both sides of the equation. The coefficient of the x^2 term on the left-hand side is 1, and the coefficient of the x^2 term on the right-hand side is 1. This means that the two terms are equal, and therefore p = 1.

We compared the coefficients of the x terms on both sides of the equation. The coefficient of the x term on the left-hand side is -4, and the coefficient of the x term on the right-hand side is -1. This means that the two terms are equal, and therefore q = 3.

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Darvin furniture marks up the price of a dining room set 40%. What will be the selling price of a dining room set that Darvin buys for 1500?

Answers

Answer:

$2100

Step-by-step explanation:

40% of 1500 is 600

1500 + 600 = 2100

The selling price will be $2100

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Answers

The true statement about the set is n.

The correct answer choice is option A.

Which statement is true?

The intersection of two sets for instance, set A and B, denoted (n) is the set containing all elements of set A that also belongs to set B.

{6, 8, 10, 12} _ {5, 6, 7, 8, 9} = {6, 8}

Let

{6, 8, 10, 12} = set A

{5, 6, 7, 8, 9} = set B

A n B = {6, 8}

Therefore, the intersection of set A and set B, that is, the elements of set A that are also contained in B are {6, 8}

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firm's total production of cars at the and of ten years of operation is 14/1500 I the firm produced logo cars during t's first year of operation. Forecast the level of outpul For the 15t year ​

Answers

The forecasted level of output for the 15th year would be 14/15000.

To forecast the level of output for the 15th year, we need to analyze the given information about the firm's total production of cars at the end of ten years of operation and its production during the first year.

According to the information provided, the firm's total production of cars at the end of ten years of operation is 14/1500. However, the production of logo cars during the first year is not specified. We need this information to accurately forecast the level of output for the 15th year.

If we assume that the production of logo cars during the first year is constant throughout the ten-year period, we can use the given information to estimate the average annual production. Since we have 14/1500 as the total production over ten years, we can calculate the average annual production as (14/1500) / 10.

(14/1500) / 10 = 14/15000

Therefore, the estimated average annual production is 14/15000.

Now, to forecast the level of output for the 15th year, we can assume that the average annual production remains constant. Therefore, the forecasted production for the 15th year would be the same as the average annual production.

Hence, the forecasted level of output for the 15th year would be 14/15000.

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Algebraic expression for 4less then 3x

Answers

When 'x' is 5, the Algebraic  expression 3x - 4 evaluates to 11.

To find the algebraic expression for "4 less than the product of 3 and some number," let's break it down step by step.

First, let's define the unknown number as 'x.' Since the problem states "the product of 3 and some number," we can express this as 3 * x or simply 3x.

Next, we want to subtract 4 from this product. The phrase "4 less than" indicates subtraction, so we subtract 4 from 3x. This can be represented as 3x - 4.

In summary, the algebraic expression for "4 less than the product of 3 and some number" is 3x - 4, where 'x' represents the unknown number.

To calculate the value of this expression for a specific value of 'x,' you substitute that value into the expression and simplify. For example, if 'x' is 5, you would substitute 5 into the expression:

3(5) - 4

This simplifies to:

15 - 4 = 11

So, when 'x' is 5, the expression 3x - 4 evaluates to 11.

In general, the algebraic expression allows us to represent a mathematical relationship between quantities using symbols and operations. By substituting specific values into the expression, we can calculate the corresponding results.

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Note the complete question:

Algebraic expression for 4 less than the product of 3 and some number

What is the algebraic expression for "4 less than the product of 3 and some number?

Please help me understand the meaning of how to calculate.

100 Points! Geometry question. Photo attached. Only looking for an answer to B. Please show as much work as possible. Thank you!

Answers

Answer: Read the solution

Step-by-step explanation:

A. For diagram A, triangles ANC and BDE are similar. Thus, we can use similarity ratios to find the length of AC. (x+1)/12 = (x+5)/15. 15x+15=12x+60. Thus 3x=45, and x=15. Since we need to find AC, AC = 15+1 = 16.

B. For diagram B, triangles SRT and VUT are similar. Again, using similarity ratios, (4x-1)/14=(x+2)/6 or 14x+28=24x-6. 10x=34, x=3.4.

(a)Derive the Lagragian interpolating polynomial of degree 1, if P₁(x₁) = a + bx₁ P₁(x) = a + bxo P₁(x) = a + bx where P₁ (x₁) = f₁, P₁ (xo) = fo.​

Answers

The Lagrange interpolating polynomial of degree 1 is P₁(x) = (f₁ - fo)x + (foxo - f₁xo) / (x₁ - xo).

To derive the Lagrange interpolating polynomial of degree 1, let's consider two distinct points: (x₁, f₁) and (xo, fo). The Lagrange interpolating polynomial of degree 1 can be expressed as:

P₁(x) = L₁(x)f₁ + L₂(x)fo,

where L₁(x) and L₂(x) are the Lagrange basis polynomials defined as:

L₁(x) = (x - xo) / (x₁ - xo),

L₂(x) = (x - x₁) / (xo - x₁).

Substituting these expressions into P₁(x), we have:

P₁(x) = [(x - xo) / (x₁ - xo)]f₁ + [(x - x₁) / (xo - x₁)]fo.

Simplifying further:

P₁(x) = [f₁(x - xo) + fo(x - x₁)] / (x₁ - xo).

Expanding the numerator:

P₁(x) = [f₁x - f₁xo + fox - fox₁] / (x₁ - xo).

Finally, we can rearrange the terms to obtain the Lagrange interpolating polynomial of degree 1:

P₁(x) = (f₁ - fo)x + (foxo - f₁xo) / (x₁ - xo).

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Kirsten got paid $432.50 for her work this month. She worked for 35 hours but broke a coffee mug so had to take $5 out of her pay. Write an equation, define your variable and solve. How much does she make an hour?​

Answers

Answer:

Kirsten makes $12.50 per hour

Step-by-step explanation:

The total is $432.50

$5 is taken out of her paycheck, so that will be negative.

35 hours is the time she spent working.

The unknown variable we are looking for is the amount she makes in one hour.

Setting up the equation, we get:

$432.50 = $35x - $5

where x is the amount she makes every hour

Solve for x:

$437.50=$35x

$437.50 / $35 = x

Therefore, x = $12.50

A handrail, 5.4m long on a staircase is inclined at 40° to the horizontal .if the lower end of the handrail is 0.7m high, calculate the height of the upper end above the floor​

Answers

The height of the upper end of the handrail above the floor is approximately 3.467726 meters.

To calculate the height of the upper end of the handrail above the floor, we can use trigonometry and the given information about the length of the handrail and the angle of inclination.

Let's break down the problem into two right triangles:

The first right triangle is formed by the handrail, the floor, and a vertical line connecting the lower end of the handrail to the floor. The vertical line represents the height of the lower end above the floor, which is given as 0.7m.

The second right triangle is formed by the handrail, the floor, and a horizontal line parallel to the floor, connecting the upper end of the handrail to the floor. This horizontal line represents the height we need to calculate.

Now, let's apply trigonometric ratios to find the height of the upper end of the handrail above the floor.

In the first right triangle:

Opposite side = height of the lower end = 0.7m

Hypotenuse = length of the handrail = 5.4m

Using the sine function:

sin(angle) = Opposite / Hypotenuse

sin(40°) = 0.7 / 5.4

Now, let's solve for the sin(40°):

sin(40°) ≈ 0.64279

Multiplying both sides of the equation by 5.4:

0.64279 * 5.4 ≈ 3.467726

So, the length of the vertical line in the second right triangle (representing the height of the upper end of the handrail above the floor) is approximately 3.467726 meters.

Therefore, the height of the upper end of the handrail above the floor is approximately 3.467726 meters.

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