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cupoosta [38]
3 years ago
15

If a cube has a surface area of 72ft squared, what is the measure of each side?

Mathematics
1 answer:
tatyana61 [14]3 years ago
5 0
The answer is 18 just divide 72 by 4
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tatyana61 [14]

Answer:

18-9x

Step-by-step explanation:

6 0
3 years ago
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A picture inside a frame is 2 inches longer than it is wide. The picture is in a frame that has a width of 3 inches on each side
geniusboy [140]

Answer:

The dimensions of the frame are 15 in x 13 in

Step-by-step explanation:

Let

x ----> the length of the picture

y ----> the width of the picture

we know that

x=2+y -----> equation A

The area of the picture, including the frame is

A=(x+6)(y+6)

A=195\ in^2

so

195=(x+6)(y+6) ----> equation B

substitute equation A in equation B

195=(2+y+6)(y+6)

solve for y

195=(y+8)(y+6)\\y^2+6y+8y+48=195\\\\y^2+14y-147=0

solve the quadratic equation by graphing

The solution is y=7 in

see the attached figure

<em>Find the value of x</em>

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x+6=9+6=15\ in

y+6=7+6=13\ in

therefore

The dimensions of the frame are 15 in x 13 in

7 0
3 years ago
Which of the following ordered pairs is a solution of 3x+2y=-19
34kurt
We need the ordered pairs to choose an answer, but if you want to do it yourself you plug in the x and y values (x,y) and test to see if the equation is true, and equals -19.
8 0
3 years ago
w^(2) + 11w + 18 ? the sum of the factors of each constant term should be positive or negative when you factor the trinomial ?
OverLord2011 [107]
(x+9)(x+2) both positive when all are positive

4 0
4 years ago
I need to find the slope like asap help thanks
7nadin3 [17]

Answer:

1

Step-by-step explanation:

Using a slope triange we can see that the rise is 1 and the run is 1 and 1/1=1

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