Simplify the expression below. Give your answer in standard form. (18 – 2x^3 + 9x) - (4 – x² – 3x^3 +11x)

How many grams must be adde to 970g to make 1 and a half kg

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step