How do i find out surface area a rectangular prism ?

Answers

Answer 1

Answer: the formula for a rectangular prism's surface area is A=2(wl+hl+hw)

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Marty lives 2/3 mile from school. Linda lives 3/4 as far from school as Marty does. how far does Linda live from school?

Answers

A half mile
$(2)/(3)$ • $(3)/(4)$ = $(6)/(12)$
Which simplifies to $(1)/(2)$
Hope that helps

What is the average rate of change of the function f(x)=2(3)x from x = 2 to x = 4?Enter your answer in the box.

Answers

The average rate of change of function is 72.

SOLUTION:

Given that, we have to find the average rate of change of the function f(x)=2(3)x from x = 2 to x = 4

Use the slope formula to find the average rate of change:

$\begin{array}{l}{m=(y 2-y 1)/(x 2-x 1)} \n\n {m=(f(4)-f(2))/(4-2)} \n\n {m=(f(4)-f(2))/(2)}\end{array}$

To simplify this, we need to find values of f ( 4 ) and f ( 2 ) :

$\begin{array}{l}{f(4)=2 x(3)^(4)=2(81)=162} \n\n {f(2)=2(3)^(2)=2(9)=18} \n\n {m=(162-18)/(2)} \n\n {m=(144)/(2)} \n\n {m=72}\end{array}$

Students were surveyed about their favorite colors one fourth of the students preferred red 1/8 of the students preferred blue, and3/5 of the remaining students preferred green. If 15 students prefer green how many students were surveyed

Answers

Let us assume the total number of students surveyed = x
Then
Number of students preferring red = x/4
Number of students preferring blue = x/8
Then
Number of students remaining = x - [(x/4) + (x/8)]
   =x - [(2x + x)/8)
   = x - (3x/8)
   = (8x - 3x)/8
   = 5x/8
Number of students preferring the color green = (3/5) * (5x/8)
   = 3x/8
We also know that the total number of students preferring the color green is 15
So
3x/8 = 15
3x = 15 * 8
x = (15 * 8)/3
   = 5 * 8
   = 40
So in total 40 students were surveyed. I hope the procedure is clear to you.

"The quotient of a number and four decreased by ten is two. What is the number?" im confused. can someone help?

Answers

this is how to answer it
x/4-10=2

Which fractions are equivalent to 40%?

Answers

All of them except 8/100 because it results 0.08 or 8%.

The rest:

2/5 = 0.4 = 40%

8/20 = 0.4 = 40%

4/10 = 0.4 = 40%

16/40 = 0.4 = 40%

40% = 40/100

8/100 doesn’t equal to 40 because it’s already over 100

2/5 x 20 = 40/100

8/20 x 5 = 40/100

4/10 x 10 = 40/100

16/40 divide by 2 = 1/5 x 20 = 20/100

So your answers are 2/5, 8/20 and 4/10

Is 4/10 greater than 3/8

Answers

Yea 4\10 is bigger because 10 is bigger than 8

no you are wrong just because ten is greater than 8 is the answer the answer is 3/8 because 8÷3=3.6666666667 but 10÷4 is 3.5 3.6 is greater so the answer is 3/8

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