Answer:
x = 6
Step-by-step explanation:
to evaluate this 1/2 (4x + 16) = 20 we need to open the bracket and then cross multiply and finally evaluate for the value of x
1/2 (4x + 16) = 20
4x + 16 = 2 x 20 ............................... using cross multiplication
4x + 16 = 40
combine the like terms together
4x = 40 -16
4x = 24
divide both sides by the coefficient of x
4x/4 = 24/4
x = 6
therefore the value of x in the expression 1/2 (4x + 16) = 20 is evaluated to be equals to 6
Answer:
39.27
Step-by-step explanation:
Calculate whole area of circle - pi5^2 = 78.54
Divide answer by 2 as only half of the circle is shaded - 78.54/2 = 39.27
Answer:..............................
Step-by-step explanation:
All straight lines equal 180 degrees that problem equals 210.