Solve for z.

z - 12 = - 9

Vlad spent 20 minutes on his history homework and then completely solved x math proplems that each took 2 minutes to complete.

A sample of 4 different calculators is randomly selected from a group containing 19 that are defective and 36 that have no defects. what is the probability that at least one of the 4 calculators in the sample is defective?

HOW is shape important when measuring a figure?

I have a large (24" diameter) mushroom and sausage pizza. I can only make 5 cuts, what is the maximum amount of pieces I can cut the pizza into? (Hint: it is more than 10 pieces)

A butterfly population is decreasing at a rate of 0.82% per year. There are currently about 100,000 butterflies in the population. How many butterflies will there be in the population in 250 years?

2/3 of a pizza was left over. A group of friends divided the leftover pizza into pieces each equal to 1/18 of the original pizza. After each friend took one piece, 1/6 of the original pizza remained. How many friends were on the group

A shipping company needs to determine the number of Styrofoam packing peanuts that fit per square foot in a box that measures 20 ft2 Question: 1.

Which type of correlation would you expect to see between the weight of a dog and the amount of food the dog eats? Positive Negative None

The sum of 3 times a number and 6=2 variable b

Find the value of x2 - 7x + 9 when x = 6. The value of the expression when x = 6 is