Answers are 36,54,198,72

72°

Step-by-step explanation:

∠ AOB = 20% of 360° = 0.2 × 360° = 72°

arc AB is equal to the angle subtended at the centre , that is

arc AB = 72°

50*10 is greater

step-by-step explanation:

if you add the zero from 10 to 50, it will give you a bigger number.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.