Answer:
x = 12
Step-by-step explanation:
(6x-2) + 20 = 90
6x-2 = 70
6x = 72
72 / 6 = 12
x = 12
8 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Radius after dilation = 4 * 1/2 = 2 in
Now, C = 2πr
C = 2π(2)
C = 4π
Or C = 4 * 3.14 = 12.56
In short, Your Answer would be 4π or 12.56 in
Hope this helps!
Answer:
5 hours
Step-by-step explanation:
Each person works at a rate 1/100 of wall completed per hour.So five men working at the rate would be 5/100. So, it would...
Answer:
Option (B) is correct .
The constant of proportionality is 7.5 .
Reason
Let us assume that the number of books be x.
Let us assume that the cost of books be y .
Than

y = kx
Where k is constant of proportionality .
As given
Number of Books 4 6 8
Cost ($) 30 45 60
Thus
when x = 4 , y = 30
Put in the equation y = kx .


k = 7.5
when x = 6 , y = 45
Put in the equation y = kx .


k = 7.5
when x = 8 , y = 60
Put in the equation y = kx .


k = 7.5
Therefore the constant of proportionality is 7.5 i.e option (B) is correct .