260 miles/12 gallons ≈21.7 miles per gallon
286 miles ÷ 21.7 ≈ 13.2 gallons needed
A) y=55x+80
C) y=55(12)+80 = 740$ after a year
B)
Answer:
-3
Step-by-step explanation:
2/5(-10x+5)+8x=3(2x+6)-10
-20/5x+10/5+8x=6x+18-10
-4x+2+8x=6x+8
-4x+8x=6x+8-2
4x=6x+6
4x-6x=6
-2x=6
x=6/-2
x=-3
I am pretty sure it is the fourth choice, mThis is because 54+81=135 and angle YXW is 135°
Answer:
see below
Step-by-step explanation:
0 = x^2 + 6x – 10
Add 10 to each side
10 = x^2-6x
Take the coefficient of x
-6
Divide by 2
-6/2 =-3
Square it
(-3)^2 =9
Add 9 to each side
10+9 = x^2-6x+9
We use -3 for the square term
19 = (x-3)^2
Take the square root of each side
±sqrt(19) = x-3
Add 3 to each side
3±sqrt(19) = x
