Flying with the wind, a plane flew 720 mi in 3 h. Against the wind, the plane required 4 h to fly the same distance. Find the rate of the plane in calm air and the rate of the wind.

Flying with the wind, a plane flew 720 mi in 3 h. Against the wind, the plane required 4 h to fly the same distance. Find the rate of the plane in calm air and the rate of the wind.

(1) x2+y2=16 4x2+9y2=36 (2) x2+y2=17 x2-2y2=-31

x+3y=-5 9x+30y=-48

Put a digit from 0 to 9 in each blank so the addition is correct. use each digit only once. ___+___+____

The total cost after 7 months' membership will be $3,175, and after 1.5 years, $4,110. Find both the initiation fee and the monthly dues.

x-2y=5 x-2y=5

Using the equations : y= 75x+200 and y=125x I need to solve them using the elimination/addition method.

A mason can build a retaining wall in 10 hours. With his apprentice assisting, the wall is built in 6 hours. How long would it take the apprentice alone to construct the wall?

can you solve this one with steps because I still don't understand it?

about the sales of the ABC and XYZ companies using following data: Assume that the ABC company has sales of 4670000 dollars and it's sales are growing at a rate of 30000 dollars per year. Assume that...

the lottery winner who is going to invest in utility bonds and a savings account using the following data: Assume that her total winnings are $ 200000, that the utility bonds will pay 3 percent per...

x+4y=-1 12x+51y=-12

x+y=-1 x+2y=0

x+3y=7 6x+21y=51

x-2y=3 3x-6y=9

Give your ordered pair solution in solution set notation. If the system has dependent e quati ons , give solution set in set - builder notation

can you show me the steps please?

Nancy and Adriana use a metal alloy that is 16% copper to make jewelry. How many ounces of an 11% alloy must be mixe d with a 24% alloy to form 130 ounces of the desired alloy? 2x2...

6x+y=-5 4x-2y=-86

Addition Method - Algebra I