First, distribute the 0.2 to both terms inside the parentheses:
0.2(pi + 6) = 0.2*pi + 0.2*6 = 0.2pi + 1.2
Now, subtract 0.2pi from both sides of the equation:
pi - 8.4 - 0.2pi = 0.2pi + 1.2 - 0.2pi
Simplifying both sides:
0.8pi - 8.4 = 1.2
Add 8.4 to both sides:
0.8pi - 8.4 + 8.4 = 1.2 + 8.4
Simplifying both sides:
0.8pi = 9.6
Divide both sides by 0.8 to solve for pi:
pi = 9.6 / 0.8
Simplifying:
pi = 12
Therefore, the value of x is 12.
Answer: D. 12
Solve the equation for x.
pi - 8.4 = 0.2(pi + 6)
A.
6
B.
8
C.
9
D.
12
1 answer