What does the constant of variation mean?

A lab technician wants to make 50ml of a 20% alcohol solution. she has solutions that are 30% and 15% alcohol. how much of each must she use?

How much do you make annually at 15 dollars an hour 23 hours a week?

Juan's age is 5 years more than twice Margo's age. The sum of their ages is 29 years. Find their ages

The probability a person has read a book in the past year is 0.81. The probability a person is considered a millennial is 0.28. The probability a person has read a book in the past year and is considered a millennial is 0.

Rex earns $9.50 per hour working part-time. He worked 10.5 hours each week for two weeks. What was the total amount rex earned for working the two weeks?

around a square with diagonal d = 4.6 cm a circle is described. Calculate the perimeter of the circle

Mr. jones bought 4 concert tickets for $252. what was the price per ticket.

Ella bought 11/12 of a pound of green grapes and 3/4 of a pound of red grapes. How much more did the green grapes weigh than the red grapes?

Roberto listed his assets and liabilities on a personal balance sheet. Roberto's Balance Sheet (September 2013) Assets Liabilities cash $1,800 credit card $4,000 investments $6,200 personal loan $1,000 house $150,000 mortgage $100,000 car $8,000 car

A = 14, b = ?, c = 22