How many liters of 70% solution must be mixed with 100 liters of 40% solution to get to a mixture of 50% solution?
How many liters of 70% solution must be mixed with 100 liters of 40% solution to get to a mixture of 50% solution?
You invest $20,000 in two accounts paying 7% and 9% annual interest, respectively. If the total interest earned for the year is $1,550, how much was invested at each rate?
the hypotenuse of a right triangle measures 20cm. the sum of the lengths of the legs is 28 cm. find the length of each leg of the triangle.
A coin collector has $1.55 in dimes and nickles. He has eight more dimes than nickles. How many nickles and dimes does he have?
I need help how to solve and it and the answer
City A has an elevation of 3447 feet above sea level while city B has an elevation of 86 feet below sea level. How much higher is City A than City B?
Lauren owns 28 acres of land which she rents to a farmer for $3812 per acre per year. Her property taxes are $972 per acre per year. How much profit does she make on the land each year...
A rectangular field is 3 yards longer than twice its width. If the perimeter is 156 yards, how wide is the field?
13.5 g of Aluminium when changes to Al3+ ion , in solution , will be : 9.0 X 1023 electrons 3.01 X 1023 electrons 6.023 X...
i am working and chemistry lab assignment that drives me crazy.
During an election campaign a candidate gave away 5000 advertisements. The pens he gave away cost $0.23 ea. and the bumper stickers cost $0.14 ea. He spent a total of $970.00 for pens &...
I need it for our statistic assignment, please. Thank you
Biology I need help with
Instructions:Select the correct answer. Which narrative point of view is used in this excerpt from “The Lily’s Quest” by Nathaniel Hawthorne? So one breezy and cloudless afternoon Adam...
4. In the old days, slot machines worked like this: you pull the lever to spin three wheels; each wheel has 20 symbols, all equally likely to show when the wheel stops spinning. The three wheels are...
find the length of the ladder if the distance from the bottom of the ladder to the building is 9 feet.
I do not know how to do it ??????????
Pn=????????
the formula for the triangle is 1/2(s)(3 (square rooted)/2(s). The perimeter of an equilateral triangle is 3s.
Simplify (7x-11)-(x+3) please explain and show work