X = measure of each of the legs
"perimeter is 8 more than 2 times one of the legs" ---> P = 2x+8
P = 28 is the given perimeter
So,
P = 2x+8
28 = 2x+8
2x+8 = 28
2x = 20
x = 10
If x = 10, then the two legs add up to x+x = 10+10 = 20
Leaving P-20 = 28-20 = 8 inches left over for the base
You have the correct answer (choice D, 8 inches) though your steps are a bit confusing at some parts. Such as the part where you wrote 2x = 10 twice. I think I know what you were trying to say.
The first one is Dakota and the secound one is Tom
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
When we rotate anything, at least one part/face of it will become spherical/circular. In this case, the exterior of the shape will become circular when we rotate about line m.
A 3D shape with the above description is a cylinder. So, cross off C, D, and E. Now, when we rotate this figure to get the cylinder, the top is a circle. Since the figure is simply being rotated, the radius is not lengthened or shortened; it stays the same.
Therefore, the radius of the cylinder is still 5.
Thus, the answer is A.
Hope this helps!
Answer:
A
Step-by-step explanation:
3 goes into 9
4 goes into 12
And 5 goes into 20