Use the formula for the sum of an arithmetic series: �2(�1+��)2n(a1+an).
A rectangle has a length of 8 units and a perimeter of 24 units. What is its width?
If 3�+4=193f+4=19, what is the value of �f?
If 4�−1=154m−1=15, what is the value of �m?
Solve: 2×(�+4)=202×(x+4)=20
What is the median of the following set of numbers: 12, 8, 5, 16, 20?
Solve for �x: 13(9−�)=231(9−x)=2
If 3883 of a number is 24, what is the number?
Express 0.4 as a fraction in simplest form.
Solve for �x: 12(6�−3)=921(6x−3)=9
What is the name of a three-dimensional figure with all sides equal and all angles right angles?