Answer:
B 125.6
Step-by-step explanation:
We can use the formula for the circumference to solve.
C=2
r
C=2(20)
C=(6.28)(20)
C=125.6
• Move x to the other side
7y=21-3x
• Divide by 7
y = (21-3x)/7
Answer:
multiplying both-side of the equation by 3
substituting 36 for p to check the solution
Step-by-step explanation:
To solve the equation p/3 = 12, we will follow the steps below;
first multiply 3 to both-side of the equation, that is:
p/3 × 3 = 12 × 3
On the left-hand side of the equation, 3 at the numerator will cancel-out 3 at the denominator, leaving us with just p while on the right-hand side of the equation 12 will be multiplied by 3
p= 36
To check the correctness of the equation, we can substitute p = 36 back into the equation and then check, that is;
p/3 = 12
36/3 = 12
This implies p = 36 is correct
