Answer:
Equation: 5w = c
Step-by-step explanation:

k is a constant of proprtionality

» Therefore, equation becomes:

The value of x is -3, or x= -3
Answer:
Taras phone bill will be 70 doll hairs.
Step-by-step explanation:
100x.10=10
10+60
70
hope this helps!!!
(5x-7)2 + 140x
= 25x2 - 70x + 14 + 140x
= 25x2 + 70x + 14
= (5x+7)2
Two sides of the triangle are identical
A triangle is 180 degrees
180-40 is 140
and then 140 divided by two is 70 (since the two angles that were remaining were identical due to the sides being identical)
I hope this helps!