Explain why numbers with a 5 in ones place or not prime numbers

Which statement explains why 49 is a perfect square? 49 can be multiplied by 49. 49 is equal to 7 plus 7. 49 is between 36 and 64. 49 is equal to 7 times 7.

How can I find the area of a rectangle with a rectangle the size of w - 2in and l - 5 in. I need two ways and i need a lot of easy explaining because I need to draw how I did it.

If x times 9=145 what is x does this sound write

Tamara finds the sum of two number cubes rolled at the same time. The chart below shows all possible sums from the 36 possible combinations when rolling two number cubes.

Use the reverse tabular method to solve division problem: (x^3-8) / (x-2)

A spinner is divided into 5 equal sections labeled A B C D E. You spin the spinner twice. What is the probability you land on a vowel both times?

Solve the equation h/9=7

The system of equations x = y - 1 y + 4 = x + 6 has how many solutions.

Solve this inequality: 3 (x + 6) - 2 (x + 2) > (or equal to) 10

Is 4/5 greater than 1/3