A square as 9 inch sides. every side of a pentagon is also 9 inches long. are their perimeters the same? explain your answer.

There are eight more girls than boys in a school play. The ratio of boys to girls is 5 to 7. how many boys and girls are the play?

16 is 25% of what number

4 (x2-5x+3) - 2 (x2-4x+2

Find the 50th term of the following arithmetic sequence: 6, 15, 24, 33, ...

The digits of a certain three-digit number are consecutive odd numbers. If the sum of the digits is 15, find the number.

Here are six measurements of the electrical conductivity of an iron rod. 10.06 9.87 10.03 10.14 10.19 10.09 The iron rod is supposed to have conductivity 10.1. Do the measurements give good evidence that the true conductivity is not 10.

Substitution -2x-y=-9 5x-2y=18

Suppose you want to know the opinions and ideas of a very large population. Explain how you would gather a sample so that it is representative of the larger population.

If a person makes $12.00 per hour, and twice that much if they work more than 35 hours in a week, how much would that person make if they worked 42 hours in a week?

Which expressions show the expanded form for 40.507?