N/2+4=-4. i need i cannot figure this out and i left. my math binder at my school. : / plz halp : 3

Simplify (2^5/3^2)^4 a. 2^20/3^8 b. 2^9/3^8 c. 8^5/12^2 d. 2/3^2

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?