Kearse

Mr. Oliver invested a total of $6400, part at 9% per year and the remainder at 8% per year. At the end of 2 years and 6 months, he had earced a total investment of $1380 in simple interest. How much ded he invest at each rate. I have to come up with the e...

I have to design a gadget that will either: light a match, pop a balloon, cause something to change color, lift a 500gm object at least 5cm, Blow out a candle, and/or turn on a light bulb. This experiment can be done by either using baking soda and vinega...

Bex, I have to have 2 different numbers. I have to find out how much he invested at each individual rate. I have .09x + .08(6400 - x)=1380. This equation is not correct. Someone please help me!!

yes that is the same answer I get. Good luck!

11x +19 and m+6

you have to subtract 10 from each side in order to isolate the 3y. so you have: 10 - 3y = 1 -10 -10 ______________ -3y = -9 Divide each side by -3 and y =3