Solve each equation and check your solution. 1.-3w - 4= w+ 3
2.3(3 – 3x) = 2(x + 3) – 30
3. 1/3( z+ 4) – 6 = 2/3 (5 – 2)

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

2-3 6. use your equation to find how high tyler will have to climb to scale the peak. (4 points: 2 points for correctly substituting values, 2 points for the correct height)

What is sin 7x/4 ? i need on this urgent trig