Ametalworker 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?

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Find the slope of the line passing through a pair of points

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x