A jeweler has five rings, each weighing 18g, made of 20% silver and 80% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 60%. How much silver should he add?

In which quadrant is - 3-4i located?

a customer has six $1 bills $35 bills $14 bills 7 quarters 10 dimes 7 nickels and 9 pennies the customer buys a pair of shoes for $49.

14-2y=20 solve for y

What is the supplement of 122 degrees

If the ratio of blue shirt to green shirts is 5:12 with a total of 340 shirts, how many shirts are blue

Light bulbs manufactured at a certain factory have a 3% probability of being defective. What is the probability that 5 out of a shipment of 30 will be defective? a. 0.25 b. 0.0016 c. 0.0035 d. 0.167

If - 1 is a root of f (x), which of the following must be true? A factor of f (x) is (x - 1). A factor of f (x) is (x + 1). Both (x - 1) and (x + 1) are factors of f (x). Neither (x - 1) nor (x + 1) is a factor of f (x).

What is the average speed of a cheetah that sprints 100 miles in 4 seconds? How about if it sprints 50 miles in 2 seconds?

A mother is 4 times as old as her daughter. in 3 years, the mother will be 3 times as old as her daughter. how many years old is the daughter now?

What is 0.947 founded to the nearest tenth