Explain how to add or subtract decimals

How many times can 21 go into 78,974

8x=64 how do I solve this

There are 30 students in a class. Three-fifths of the students are girls. How many girls are in the class

3. If 14 is 35% of a value, what is that value?

How do I convert 8.41 g/mL to Kg/L

Mrs Naidu bought $155 in groceries. she paid her bill with $5 and $20 notes using a total of 13 notes. calculate how many of each type of each type of note were used.

At the mall Greg purchased three CDs which cost $10.68 each if Greg has $79 in his wallet before the purchase how much money is left in his wallet

Order them from greatest to least. 1 lb = 16 oz 1 oz ≈ 28.3 g 800 g, 1.6 lb, 30 oz

When four times the number is added to 7 times the result is 33. What is the number?

A tablet computer costs $189.69 including tax. It is marked up 30%. What is the final price of the tablet computer after it is marked up? A. $56.91 B. $132.78 C. $219.69 D. $246.60