Evaluate the following expression: -2|9|.

a. 18
b. -11
c. -18
d. 11

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?