An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon? A. 8

B. 9

C. 10

D.11

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

That is ,

OR

Sum of exterior angles of a regular polygon = 360

Given 1 exterior angle of the regular polygon is  40

Therefore ,

answer: add the !

step-by-step explanation: then we will answer

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.