To find a baseball pitcher's earned run average (ERA), you can use the formula Ei=9r, where E represents ERA, i represents number of innings pitched, and r represents number of earned runs allowed. Solve the equation for E ... ?

if 4 workers can complete a job in 12 days, how many days will it take 3 workers to complete the same job

60 is what percent of 130

Jenya recorded the number of hours that 10 students watch tv in a week the results are shown below what is the mean absolute deviation (MAD) for hours of tv watched 6, 5, 4, 5, 8, 3, 1, 0, 6, 4 A. 0.9 hours B. 1.8 hours C. 3.6 hours D. 4.8 hours

Series of equations. 1 = 1 : 2/2 1+2 1 + 2 + 3 = 346 1 + 2 + 3 + ? = ? 1 + 2 + 3 + 7 + ?=?

Students on the softball team on $295 from the car wash how many team banners can they buy each banner cost eight dollars

What's the solution of the system? 7x+5y=19 -7x-2y=-16

Nina and her friends are going to the downtown rib festival. The festival organizers expect 10,000 people to attend the four-day festival. At the end of the festival the organizers say that they have exceed their expected attendance by 2000 people.

What is Y-3x=-7 y=-4x+7

Greatest command factor of 16 60 90

How to add and subtract polynomials