A standard piano has 88 keys. There are 52 white keys and 36 black keys. What is the ratio of white keys to black keys?

A company has set its gross margin benchmark at 40% to 42%. An increase in the ratio from 38% to 39% is a positive trend.

What is the result when 12a + (-8b) is subtracted from 24a + 10b

Against the wind a plane traveled 1000 miles in 4 hours. On the return trip with the wind the plane took 3 hours and 20 minutes. Find the speed of the plane and the wind.

If an experimenter conducts a t test for independent means and rejects the null hypothesis, the correct interpretation is that: a.

Dave surveyed 80 7th-graders and 90 8th-graders. He found that about 75% of the 7th-graders like pop music, while 80% of the 8th-graders like pop music. Do more 7th-graders or more 8th-graders like pop music. Explain.

Simplify the given equation. 5x + 2 (x - 3) = - 2 (x - 1) 7x-3 = - 2x-1 7x - 6 = - 2x + 2 7x-6=-2x-2

Which value of the makes / dfrac{8+h}{10}=1 10 8+h =1start fraction, 8, plus, h, divided by, 10, end fraction, equal, 1 a true statement?

What is 45 rounded to nearest ten

How is growth shown in a rule

Find a cubic function with the given zeros. 7, - 3, 2