Answer:
D. 21
Step-by-step explanation:
replace 21 for r, 4(21)=84
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4:2 and 2:1 are equivalent ratios to 8:4
Answer:
D.
Step-by-step explanation:
Complementary angles are two angles whose measures add to 90°.
A.
m<CFD = 150° - 100° = 50°
m<EFD = 180° - 150° = 30°
Sum = 80°
No
B.
m<AFB = 40°
m<DFE = m<EFD = 30°
Sum = 70°
No
C.
m<AFC = 100°
Sum > 100°
No
D.
m<BFC = 100° - 40° = 60°
m<DFE = 30°
Sum = 90°
Yes
Answer: D.
Total hours= 2.2+3.5=5.7
Total earned = 5.7 x $7.50= $42.75
