A metalworker has a metal alloy that is 15% copper and another alloy that is 65% copper. How many kilograms of each alloy should the metalworker combine to create 50 kg of a 45% copper alloy? PLZZZ ANSWER QUICK 40 PTS!!!

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the

F(x)= 1/x-2, g(x)= 2x+1/x a: use composition to prove whether or not the functions are inverses of each other. b: express the domain of the compositions using interval notation.