The formula given to us relates circumference with radius but we are given diameter instead. good thing we know that diameter is twice the length of radius so if diameter=28, the radius=14. therefore, using our formula, we can find the circumference:
C = 2(pi)(14)
C = 87.96
and this answer is close to 88 so the answer is A
let me know if you have any questions!!!
Answer:
the answer will be two hours because they are two this means if Laura finishes in 3hours and Ben finished the the same job in 3hours the answer will be the Lauras minus the Ben so I think it's 2hour the answer will be 2hour
16 ..............::......
Answer:
( - 2 - 5m ) / 3
Step-by-step explanation:
15m + 9n = - 6
9n = - 6 - 15m
Divide by 3 on both sides,
9n / 3 = - 6 / 3 - 15m / 3
3n = - 2 - 5m
n = ( - 2 - 5m ) / 3
4 x - 2 y = 6
2 x + y = 5 / * 2 ( we will multiply both sides by 2 )
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4 x - 2 y = 6
+
4 x + 2 y = 10
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8 x = 16; x = 2
4 + y = 5
y = 5 - 4; y = 1
In the system of equations D :
8 x = 16; x = 2 ,
8 + 2 y = 10
2 y = 2, y = 1
Answer: D ) is the equivalent system
