Answer:(9y-7)(9y+7)
Step-by-step explanation:
81y^2-49
=(9y)^2-(7)^2
=(9y-7)(9y+7)
Answer:
15
Step-by-step explanation:
100 laps
100 divided by 20 Is 5
3 x 5 is 15
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Answer:
Step-by-step explanation:
4(x+6)/(x-2)*(x+10)/24(x+6)
First we do 4(x+6)
4x+24
Then we do 24(x+6)
24x+144
So we plug it in
4x+24/x-2*x+10/24x+144
To find the lateral surface area of a pyramid, you can find the area of each triangle, A = 1/2bh or A = 1/2lw, then multiply by the number of triangles, which would be based on the number of sides of the base; or you can take half the perimeter and multiply by the slant height.
Answer:
24
Step-by-step explanation:
80/5=16
80/2=40
16+40=56
80-56=24