Ali found four pieces of wire in his tool drawer. Here are their lengths (in centimeters). 13, 4.37 , 15.4 , 5.2 What is the total length of the four pieces?

Which equation can be used to solve for the unknown number? seven less than a number is thirteen. n-7=13 7-n=13 n+7=13 n+13=7

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

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