Helene is finding the sum (9 + 10i) + (-8 + 11i). She rewrites the sum as (-8 + 11) i + (9 + 10) i. Which statement explains the property of addition that she made an error in using?

7. In 3d grade. Branna read 31 mystery books, 21 science fiction books, and 8 biographies. How many books did Brianna read in total in the 3 grade?

What is it called when you multiply or divide two quantities by the same number?

Identify the property that justifies the following statement: If m_1 = m_2, then m_2 = m_1.

To measure how much water is in a pool meters liters or grams

The price per ounce of a bag of chips is 0.19 what is the cost c, of a 16 ounce bag of chips write and equation and then solve

What is the area of the triangle in this coordinate plane? 9.0 units² 14.0 units² 16.5 units² 24.5 units² A graph with a triangle drawn on it

A piece of plywood, the surface of which measures 8/9 square yard, is cut into sections each containing 2/9 square yard. How many sections are there?

Solve for t: -48t + 2 < - 71t + 14

Imagine that there are 100 different researchers each studying the sleeping habit of a college freshman. Each researcher takes a random sample size of 50 from the same population of freshman.

How to write 7.25 as a mixed number in lowest terms