Question

What is the value of x?

Answer 1

A = 1/2 b h where A = 10 b = 4 and h = x + 3

so

h = 2A/b

h = 2*10 / 4

h = 20/4

h = 5

h = x + 3

5 = x + 3

x = 2

Answer

x = 2

Answer 2

Formula

The area of any triangle is

A = 1/2 * b * h

Givens

A = 10

b = 4

h = x + 3

Sub and solve

10 = 1/2 * 4 * (x + 3) Take 1/2 of 4

10 = 2 * (x + 3) Divide by 2

10/2 = 2( x + 3) / 2

5 = x + 3 Subtract 3 from both sides.

5 - 3 = x + 3 - 3

2 = x <<<<<<<<<<<<<< answer.