Please help me out with this

x=43

Step-by-step explanation:

A triangle contains 180

So

82+55+x=180

=>137+x=180

=>x=180-137

Therefore, x=43 (you can use therefore sign instead of therefore)

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.