Which expression is prime?

A) x2 - 9

B) 1 - 9x2

C) 2a2 - 25

D) 4x2 - 9

Find the length of AD if AB = 24, DE = 8, and DC = 12.

You are painting the outside of a 28-foot fence that goes around a square garden. There are 4 equal sections. You have painted 12 of one section. What fraction of the job have you completed?

3x-15=6x what's the answer

Math word problem. What's the equation I use? Jordan wants to figure out the height of a tree in his yard. He is 5 feet tall and his shadow is currently three feet long. The measure of the tree's shadow is 9 feet long. How tall is the tree?

Matilda wants to buy some high-quality olive oil. She can buy a 2 L bottle for $50, or she can buy a 225 mL bottle for $7. In order to compare the prices, she needs to convert the volume of the second bottle to liters.

300 reduced by twice my age is 192

Jerome's rain gauge show 13 9/10 CM at the end of last month at the end of this month the rain gauge showed 15 3/10 centimeter how many more centimeters of rain fell this month

If the probability of a spinner landing on red in a game is 1/5, what is the probability of it not landing on red?

Every 4/11 people are women. how many women are there is there are 1210 people?

What is the length of the side opposite ZB? 3 units 4 units 5 units 6 units