The scores on an exam are normally distributed, with a mean of 74 and a standard deviation of 7. What percent of the scores are less than 81?

A. 84%

B. 13.5%

C. 50%

D. 16%

A large bathtub contains of 425 gallons of water after five minutes of draining it has lost 32% of the volume of water what percent of the water remains in the tub after five minutes explain your reasoning

A caterer for a wedding reception with 200 guests charged $20.00 for a beef dinner and $15.00 for a vegetarian dinner. What was the total bill if 30 people ordered the vegetarian dinner and 170 people ordered the beef dinner?

Is 36.948516 closer to 36.9 or 37

Use the geometric series formulas to find the sum of the geometric series. 1 + 3 + 9 + ⋯ + 2187

zoey is making mashed potatoes she has 5 pounds of potato and 2 sticks of butter which will feed 10 people how many sticks of butter does she need to feed 100 people

When deciding to model a situation with 3D figures, what are the most important things to remember?

Find g[h (x) ] and h[g (x) ] 2. g (x) = -3x h (x) = 4x - 1

1. In what country did the government debate the merit of teaching students quadratics? 2. What modern technology would not be possible without quadratics? (hint: I have one at my house.) 3. What great ideas did the Babylonians come up with? 4.

Which equation forms a pair of linear equations with 9x+12y=48 such that the system has no soulution?

What is the percent of decrease from 155,000 to 140,00