Roberto invested some money at 7%, and then invested $5000 more than twice this amount at 9%. His total annual income from the two investments was $3950. How much was invested at 9%?
Roberto invested some money at 7%, and then invested $5000 more than twice this amount at 9%. His total annual income from the two investments was $3950. How much was invested at 9%?
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Verify the identity.
Write the following phrase as an algebraic expression. Use x for the unknown number.
A) 7 B) -7 C) 5 D) -3 E) All are solutions
I need to calculate how many pounds of cornmeal should be in the mixture and how many pounds of the soybean meal should be in the mixture.
Simplify the following expression. (-16a^4)^1 please no similar examples
Sam drove for 2 hours at 45 mph. He has the same distance remaining. How fast should he drive to make his average speed 60 mph? Sam drove for 2 hours at 45 mph. He has the same...
The book says the answer is 17 lb. I can't figure out how this can be. I see the problem as 8 + (-9) = -1. I don't see how both numbers are to be added. HELP!!!!
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I need help for a homework assignment and cannot answer this question
2x+y=5 ( , ) 3x+2y=4
Including a 6 % sales? tax, an inn charges $ 159 per night. Find the? inn's nightly cost before the tax is added.
After a 60 % ?reduction, you purchase a new clothes dryer on sale for ?$208 . What was the original price of the clothes dryer ??
The cost of living last year went up 7 ?%. ?Fortunately, Alice Swanson got a 7 ?% raise in her salary from last year. This year she is earning ?$28 comma 200 . How much...
help needed its a juice concentration question but i need 500 gallons so the ratio is very important.
Two cities are 210 km apart. A train traveled this distance in 4 and 2/3 hours and then made the return trip at a speed of 50 and 2/5 km/h. How many times greater (or less) was the train’s speed on...
Simplify this expression. If the answer contains exponents, all exponents should be positive. (8xs)^2
A pharmacist has an 18% alcohol solution. How much of this solution and how much water must be mixed together to make 10 liters of a 12% alcohol solution? Sam drove for 2 hours at 45 mph...
If you walk for 1.5 hours at 3 mph, how fast should you run during the next 0.5 hours to have the average speed of 4 mph? How to solve this problem, show us all of your work If...