Answer:
x = 7
angle A = 7(7) + 4 = 49 + 4 = 53°
angle B = 4(7) + 9 = 28 + 9 = 37°
Step-by-step explanation:
m ∠A + m ∠B = 90° Complementary angles sum = 90°
7x + 4 + 4x + 9 = 90
11x + 13 = 90
11x = 77
x = 7
angle A = 7(7) + 4 = 49 + 4 = 53°
angle B = 4(7) + 9 = 28 + 9 = 37°
Check = angle A + angle B = 90° checked
Answer:
A I hope this helps <3
Step-by-step explanation:
Answer:
x = 27
Step-by-step explanation:
4x + 7 = 5(x - 4)
4x + 7 = 5x - 20
4x - 5x = -20 - 7
-x = -27
x = 27
Answer:
$72
Step-by-step explanation:
Divide the current bill by what it increased by to find the bill from last year.
79.20/1.10 = 72
