Question

Solve for x.

a.
20
b.
6
c.
2~5
d.
9

Answer 1

Answer its A

Explanation:

Answer 2

Answer B

Explanation:

Label the height = to y

All three triangles are similar.

Therefore 4/height as height /5 or

4/y =y/5 Cross multiply

y^2 = 20 Take the square root of both sides.

Now find x.

Solution

• The Pythagorean Theorem relates 4,y and x
• x^2 = y^2 + 4^2
• x = ?
• y^2 = 20
• x^2 = 20 + 4^2
• x^2 = 20 + 16
• x^2 = 36 Take the square root of 36

sqrt(x^2) = sqrt(36)

x = 6 Answer

B <<<< Answer