Is 85 prime or composite

In a recent survey, a random sample of 199 office managers were asked about overtime, and 76 reported that they regularly work overtime each week. What value of z should be used to calculate a confidence interval with a 98% confidence level

What is 3{1+2[+3 (5+2) ]} and how to solve it

How would you work out 4:728

Evaluate the expression when y = 3. 5y - 1

What is k if k-9/4 = 11

Find a pair of fractions that has each product. A) 6. B) 1 / 2

a recipe that serves 4 calls for 1 3/4 cups of tomato sauce. if jerry makes 2 1/2 time that amount, how many cups of tomato sauce will he need?

Find the slope of the line that contains (-2, - 2) and (-10, - 9). A) 8/7 B) 11/12 C) 12/11 D) 7/8

Which of the binomials below is a factor of this trinomial? - 3x^2-21x+24 x-4 x+1 x+4 x-1

218 students went on a field trip. Nine buses were filled and 20 students traveled in cars. How many students were in each bus?