Answer:
20
Step-by-step explanation:
because they end with same hour just subtract 25 from 45
45 -25= 20
1) x+y = 170
x-y = 26
2) Subtract the two equations from each other. Doing this you get 2y = 56.
So the value of y is 28. Then plug in the value of y into any of the two equations and solve for x.
x-28 = 26
x = 54
3) When writing solutions as an ordered pair, the x value always comes first followed by the y value. So it would be (54, 28).
Answer:
82.5 sq in
Step-by-step explanation:
15 × 11 = 165
165/2 = 82.5
82.5 sq in
Answer:
Step-by-step explanation:
y = 2x^2 - 4x - 5.......if x = -2
so sub in -2 for x
y = 2(-2^2) - 4(-2) - 5
= 2(4) + 8 - 5
= 8 + 8 - 5
= 11 <==== y is 11
