The sum of the measures of the interior angles of a polygon is 2880°. How many sides does the polygon have?

Write the expression 2*8+20-12:6 with parentheses and brackets two different ways so one value is less than 10 and the other value is greater than 50.

A stained glass window is going to be installed in a semi-circular opening, which is above a 30 inch wide door. If the stained glass window costs $1.40 per square inch, how much will the window cost? Use 3.14 for π as necessary.

The sum of two numbers is 67 and the difference is 13. What are the numbers?

There are 14 students making sculptures with craft sticks. there are 644 craft sticks in a box each student gets an equal number of craft sticks

A rectangle has side lengths of x + 3 and 2 - x. Find an expression that describes the area of the rectangle. A. 6 B. x^2-6 C.-x^2-6x D. - x^2-x+6

Which expression is equivalent to cos120°? ° cos240° cos300° cos420°?

Determinathe value of y, if x is - 4. Y = 12/x + 10

If my input is - 1 and my output is - 5 what is the equation

Is 2 tens 3 tenths 1 thousandth greater, less, or equal to 20.31

How to find the difference of - 4/5 - 3/5