How much of an alloy that is 20 % copper should be mixed with 400 ounces of an alloy that is 70 % copper in order to get an alloy that is 40 % copper?

The perimeter of a rectangle is 44cm. The width of the rectangle is 11cm. What is the length?

Mike mowed 3 1/4 lawns and Allen mowed 2 5/6 lawns. How many more lawns did Allen mow?

The position of a particle moving along a coordinate line is s = √63 + 6t, with s in meters and t in seconds. Find the rate of change of the particle's position at t = 3 sec.

Write the expression in complete factored form. x2 - 3x + xy - 3y

When f (x) = 4, what is the value of x? O о O. м O 00 O 2

How do you solve the equation 2/7m-1/7=3/14

A fish-tank has a length of 45 centimeters, a width of 25 centimeter and a depth of 10 centimeter. Find the volume of the fish-tank, 10250 cm3 11250 cm3 10250 ft3 11250 ft3

Last fall Zeke planted six bulbs in the ground, which in the spring would grow into 2 yellow flowers, 2 purple flowers, and 2 red flowers. What is the probability that the first two flowers that come up in the spring are 2 yellow flowers?

2. What can be used to describe the function graphed? y=3x+2

A factory can produce two products, x and y, with a profit approximated by P = 14x + 22y - 900. The production of y can exceed x by no more than 100 units. Moreover, production levels are limited by the formula x + 2y ≤ 1,400.