What is the percentage decrease of 3 hours to 1/2 hours

Im new at this kind of math

Which of the following sets of possible side lengths does not form a triangle a) 5,6,10 b) 4,5,15 c) 22,21,42 d) 3,4,5

What is the slope of the line defined by the equation y = 5x + 3? es) A) wilw B) wiu 3 D) 5

The length, L (in inches), of a spring is given by L = (3 4) F + 8, where F is applied force in pounds. What value of F will produce a length of 40 inches?

Prime factor of 2080

Sierra is buying treats for her birthday party. she can spend no more that $70 on cookies that cost $7.50 per box. How many boxes of cookies can Sierra purchase

Jade is making a square birthday card and she's going to put a ribbon borders on each of the 4 equal sides piece of ribbon that is 33 inches long do you have all of the ribbon how many inches of ribbon conget put on all equals side

Suppose that textbook weights are normally distributed. You measure 28 textbooks' weights, and find they have a mean weight of 76 ounces. Assume the population standard deviation is 12.3 ounces.

ABC Bookstore rents a storage space that is 75 ft x 50 ft and 15 ft high. It is charged $2.50 per square foot. How much does ABC Bookstore spend on storage space? O A. $140,625 O B. $9375 O C. $2500 O D. $3750

31/9 as a mixed number

Find 4x when 3x equals 3