The perimeter of a pentagon is 20t+7. Four sides have the following lengths: 6t, 2t, 4t-5, and 5t+1. What is the length of the fifth side?

Examine the fractions 2/3, 3/3, 4/3, 5/3, and 6/3. Explain when a denominator of 3 will result in a repeating decimal

How long does it take to travel 300 miles at a constant speed of 15 miles per hour?

George is three years older than twice his brothers age. If x represents his brothers age, which expression best represents George's age?

What is the smallest whole number that will round to 80

Rewrite the number 3,210,987 in scientific notation.

An engineer estimated the weight of a steel beam to be 600 pounds. The actual weight of the beam was 639 pounds. Find the absolute error and the percent error of the engineer's estimate. If necessary, round your answers to the nearest tenth.

Marta measured the temperature as 65°F. What is the margin of error? a. 60°F to 70°F b. 64°F to 66°F c. 64.5°F to 65.5°F d. 65.5°F to 66.5°F

3/19 of a quantity is equal to nothing of the quantity.

A family has 4 children: Ariel, Bob, Chris, and Diana. Assuming that all birth orders are equally likely. Find the probability that Ariel is older than Diana.

6n^2-18n=24 answer and thorough explanation