If sterling silver is made of a silver copper alloy which contains 7.5% pure copper. How many grams pure copper would be needed to use if you want to use 10% pure copper amd how much of the...
If sterling silver is made of a silver copper alloy which contains 7.5% pure copper. How many grams pure copper would be needed to use if you want to use 10% pure copper amd how much of the...
i do not really under stand the question and i would like to be ready for 9th grade
Two planes have an airport traveling in opposite directions. One plane travels at 470 kilometers per hour and the other at 430 kilometers per hour. How long will it take the to be 2250 kilometers...
From a certain number 3 is subtracted.The result is divided by 2.The final answer is 5. What is the number?.
Mr. Preston could purchase a new radio for: Choice # 1- $175 cash or Choice #2- paying $60 down and $9 a month for 14 month a) which is the better offer? b) How much...
The perimeter of a triangle is 21cm. If two sides are unequal length, and the their side is 3cm longer than one of the equal sides, find the length of the three sides.
Lito can get to his office,which is 14 mi away, by riding a bus for 30 min and walking for 30 min. When he wants more exercise, he gets there by riding the bus for 25 min and walking for 1 h. What...
When he runs against the wind, Ricky can run 16 km in 2 h. With the wind, he can run 5/4 of this distance in 2h. Find Ricky's running rate and the rate of the win. Assume that both are constant....
this qustion is a basic algebra word problem.
Mr. Preston could purchase a new radio for: Choice # 1- $175 cash or Choice #2- paying $60 down and $9 a month for 14 month a) which is the better offer? b)...
Maritza remembers her PIN because it is the product of two consecutive prime numbers that is between 1000 and 1500. What is her PIN?
m represents the number of miles, c is the cost per person
I need this question answered as soon as possible, I'm not sure how to set it up and solve it, Thank you!
perimeter is P=2(l+w)
It takes one crew 4 hours to clean an auditorium after an event. If a second crew helps, it only takes 2.5 hours. How long would it take the second crew, working alone, to clean the auditorium?
A water balloon is tossed into the air with an upward velocity of 25 ft/s. Its height h(t) in ft after t seconds is given by the function h(t) = − 16t^2 + 25t + 3. After...
Word problems
Word problem
a 30-inch board is to be cut into 3 pieces so that the second piece is 4 times as long as the first piece and the third piece is 5 times as long as the first piece. if x represents the length of the...
Word problems