A metalworker has a metal alloy that is 15% copper and another alloy that is 75% copper. How many kilograms of each alloy should the metal worker combine to create 90 kilograms of a 51% copper alloy?

F the volume for 3-D pyramid A is 300 cm3 and the volume for 3-D pyramid B is 900 cm3, how many times bigger is the volume of pyramid B than pyramid A?

A trailer hold 1469 shingles. How many trailers would you need to hold 4000 shingles? Remember to use units; in this case, trailers.

If f (2) = 17, what is f - 1 (17) ?

at a carnival, 700 tickets were sold for a total amount of 5,500. an adult ticket cost $10 and a children's ticket cost $5. find the number of a adult ticket (x) and the number of children's tickets (y) sold

Start time is 5:10pm Elapsed time: Read: 15 min. Homework: 23 min.

The segments below shown below could form a triangle AC = 8 CB=7 BA=15 True or false?

The initial amount of people that are sick with the flu is 36 and growing at a rate of 8% every day. How many people will be sick with the flu in 11 days?

The product of a number and 4 increased by 8 is negative 36

20.95 / 2.5 = ? / 0.25

There are 84 beads in container X and 16 beads in container Y. How many beads must rashida move from container X to container Y so that each container has the same number of beads?