Answer:
See below.
Step-by-step explanation:
7x^2 = 343 Divide both sides by 7
7x^2/7 = 343/7
x^2 = 49 Take the square root of both sides.
sqrt(x^2) = sqrt(49)
x = +/- 7
Answers
I think the last two are kind of iffy. I'm not sure you can call them solutions, but the question probably assumes they are. If you use all four answers and get it wrong, them submit +7 and - 7.
Answer:
18+4x
Step-by-step explanation:
Answer:
it is incorrect because Sasha is supposed to divide by 8 so the answer would be x=7
Step-by-step explanation:
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: y ≤ 10
Step-by-step explanation:
16 ≥ 2y -4
Add 4 to both sides
16 + 4 ≥ 2y - 4 + 4
20 ≥ 2y
divide through by 2
20/2 ≥ 2y / 2
10 ≥ y
Therefore :
y ≤ 10
