The formula for circumference is

.
To express the circumference exactly, plug the diameter in for

and put the

symbol in front of it. Don't multiply. This expresses the exact circumference.
Say you have the diameter of 17.
You can express the circumference with 17

.
Answer:
90
Step-by-step explanation:
Answer:
4=x y=325
Step-by-step explanation:
60x + 20 = 65x
group the variables
20=5x
because you subtracted 60x from both
4=x
because you divided 5 from both
now substitute 5 for x
65×5 is 325
y=325
Answer:
c
Step-by-step explanation:
absolute values are just the distance from zero so the absolute value of 42 and -42 are both the same, 42.
Answer: √
10
−
75
Step-by-step explanation: