What is the relationship between cos (90°) and cos (-90°) ?

93, 94, 95, 89, 85, 82, 87, 85, 84, 80, 78, 78, 84, 87, 90. -Calculate the mean and median closing price.

Ben currently has $70 in his trip fund. He makes $45 per week doing yard work for his neighbors. He keeps $18 of the $45 for weekly expenses. The remaining amount goes into his trip fund.

Li needs 15 pieces of string each 1/2 of a inch long. she cut a 6-inch piece of string long. how many more pieces of string does she need?

Joshua drinks 8 cups of water a day. The recommened daily amount is given in fluid ounces. How many fluid ounces of water does he drink each day?

How many times greater is the population of China than the population of France

When y is 3 and x is 5 what's the constant of variation

Find the value of c so that (x+1) is a factor of the polynomial p (x). p (x) = 2x^4-5x^2+cx+1

A company ordered 10 boxed lunches from a deli for $74.50. each boxed lunch cost the same amount. which equation represents the proportional relationship between y, the total cost of the nixed lunches and x, the number of boxed lunches? A) 7.

Change the following numbers into percent 0.05

Calculate the discriminant: 5x² + 2x - 2 = 0