After 5 new zombies invaded the library, there are 31 zombies now in the library. Which equation can be used to find n, the number of zombies in the library before the 5 new zombies joined?​

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?