Answer:
40 points
Step-by-step explanation:
Answer:
the answer is B
Step-by-step explanation:
Complentary angles add to 90 degrees
a and b are complentary
a+b=90
a=7x+4
b=4x+9
so
7x+4+4x+9=90
combine like terms
11x+13=90
minus 13 both sides
11x=77
divide both sides by 11
x=7
m a =7x+4=7(7)+4=49+4=53
m b=4x+9=4(7)+9=28+9=37
angle a measures 53 degrees
angle b measures 37 degrees
Answer:
2456.8
Step-by-step explanation:
J=×
9×1=2+3'5
f=2456.8
