A regular polygon has possible angles of rotational symmetry of 20°, 40°, and 80°. How many sides does the polygon have?

Find the volume of the composite solid. Round your answer to the nearest hundredth. A. 702.00 in3 B. 1218.03 in3 C. 676.01 in3 D. 811.51 in3

What is the answer to $2.48 for 10 slices of cheese

Jan wants to save a $2000 gift from her grandparents, and add $50 per month as emergency funds. She has narrowed her search for a savings account to 2 banks, Bank A and Bank B.

What is 4km-280m equal to

What two numbers multiply to - 30 and add up to 7

Logs are stacked in a pile on the bottom row and 15 on the top row. there are 10 rows in all with each row having one more log that the one above it. how many logs are in the stack?

Carol is cross-country skiing. The table shows the distance she traveled after various numbers of minutes. What is the rate of change?

What is the quotient of 6 divided by 1/4

Which describes a correct way to construct a scatterplot? When analyzing the number of junk e-mails received each day of the week, the number of junk e-mails is the independent variable.

The measure of each interior angle of a regular polygon is 140 degrees, how many sides does the polygon have