Answer:
Step-by-step explanation:
a-b=21
5a-2b=18
Using elimination, we have
5a-5b=105
5a-2b=18
So:
3b=-87 so b=-29
Substituting, a=-8
(a,b)=(-8,-29)
Answer:
y = 25x+100
Step-by-step explanation: You are paying 25$ times how many months he stayed there, plus a 100 dollar sign up fee, so y = 25 dollars per month, plus 100 dollars.
Answer:
x=1
Step-by-step explanation:
it is the point of intersection of both lines which (1,1)
for x=1 both produce same value i.e.,1
Answer:
<u>The last step in solving this equation was D. Divide both sides of the equation by 3</u>
Step-by-step explanation:
For finding the solution, let's solve the equation:
7/8 = 3x - 5/11
-3x = - 5/11 - 7/8
-3x = (-40 - 77)/88 (Subtracting at the right side of the equation)
-3x = -117/88
3x = 117/88 (Multiplying by - 1 at both sides of the equation)
x = (117/88)/3 (Dividing by 3 at both sides of the equation)
<u>x = 117/264</u>
<u>The last step in solving this equation was D. Divide both sides of the equation by 3</u>