The width of the box is 12cm. the length of the box is two times the width. the height is 10 cm longer than the length. what is the volume of the box?

B

Step-by-step explanation:

This is pretty easy because you'll only have one variable.

First draw a box and label your width as 12 cm, your length as 2w (because it is twice the length of the width), and your height as 2w+10(beacuse it twice the width{2w} plus 10cm)

Then, substitute 'w' for the widths measurement(12)

So, 2w becomes 2 x 12 or 24cm and 2w+10 becomes (2 x 12) +10 or 24+10 which is 34 cm

then just simply use the volume formula of a box which is V=lwh or length x width x height, so its 12 x 24 x 34 which equals 9,792 cm^3

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.