A metalworker has a metal alloy that is 20 % copper and another alloy that is 60 % copper. How many kilograms of each alloy should the metalworker combine to create 90 kg of a 52 % copper alloy?

The amount, A, in milligrams, of radioactive material remaining in a container can be modeled by the exponential function A (t) = 5 (0.5) 0.25t, where t is time, in years.

F (2) = 3t^2-2 find f (k-2)

Crystal Alexa convince the older members of their family to break up the chewy fruit worms using age ratios they want to know which family members have the same age ratios as Crystal and Alexa use the ages of their family members to find pairs that

The left and right page numbers of an open book are two consecutive integers whose sum is 445. Find these page numbers.

The cost of 12 oranges and seven apples is $5.36. Eight oranges and five apples cost $3.68. Find the cost of each

There are 7 tarantulas in the spider exhibit at the zoo. Each tarantulas has 8 legs. How many legs do 7 tarantulas have?

Does a sock has 1 line of symmetry

An attorney charges a fixed fee of $250 for an initial meeting at $150 per hour for All Hours worked after that. Write an equation in slope intercept form for the total fee of $2200.

If the probability that a person wears glasses is. 36 in the probability that a person is afraid of charges. 61 what is the probability that a randomly selected person will wear glasses and be afraid of sharks

Simplify the expression. Use the varbiables, numbers, and symbols that are shown. Drag them to the appropriate box in the polynomial. Use standard polynomial format. X (2x+3) + (x-3) (x-4)