Question

A:2
B:3
C:5
D:4

Please help, i'm stuck.

Answer 1

2

Explanation:

(x+10)/4 = 9/3

(x+10)/4 = 3

x+10 = 12

=> x = 2

Answer 2

• x = 2.

Explanation:

These are right triangles. Rectangular triangles are those that have a right angle of 90°.

⇔ EF/BC = 9/3

⇔ (x+10)/4 = 9/3

⇔ (x+10)/4 = 3.

⇔ (x+10) = 3 • 4

⇔ x+10= 12

⇔ x = 12 - 10

⇔ x = 2.