624 divided by 10 gives you 62.4(miles per hour) 660 divided by 12 gives you 55(miles per hour). So Nancy’s rate was 62.4 miles per hour & Rebecca’s rate was 55 miles per hour. That would be 62.4/55
Answer:
The diameter is 1 unit
Step-by-step explanation:
The circumference is 3.14 units
C = pi * d
Using 3.14 for pi
3.14 = 3.14 d
Divide each side by 3.14
3.14/3.14 = 3.14 d/ 3.14
1 =d
Answer:
81
Step-by-step explanation:
9*(x + y) = 10x + y
9x + 9y = 10x + y
0 = x - 8y
8y = x
=======
y = 1
x = 8
x + y = 8 + 1 = 9
9*9 = 81
So 81 is 9 times the sum of it's digits.
Answer:
179/495
Step-by-step explanation:
x = 0.3616161.......... ---------------(I)
Multiply by 1000
1000x = 361.616161......
Multiply (I) by 10
10x = 3.616161........
1000x = 361.6161......
<u> 10x = 3.6161........ </u> {Now subtract}
990x= 358
x = 358/990
x = 179/495
