*will mark brainiest*

1. what is the length of the side of the brick labeled a?
2. what is the length of the side of the brick labeled b?
3. what is the total height of the wall?
4. what is the total length of the wall?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]

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