Find the surface area of the composite figure. 20 in.
11 in.
11 in.
19 in
5 in.
12 in.
5 in.
20 in.
12 in.

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Simplify this expression.2(10) + 2(x – 4) a. 2x + 16 b. x + 12 c. 2x + 12 d. x + 16

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