John is 1.7 m tall and Ken is 1.5 m tall what is the difference in their heights expressed in centimeters

What number is 20 less than 6% of 840

The quotient of j and 8" can be expressed as:

Sue has $4, Tom has $11, Brian has $6, and Anita has $9. Use mental math to find how much money they have altogether. Show your work.

A deck of cards has 52 cards. the deck can be divided into 4 piles of exactly 13 cards each. describe all the other ways that can be divided into equal piles.

An alloy weighing 30 lbs. is 11% tin. The alloy was made by mixing a 15% tin alloy and a 9% tin alloy. How many pounds of each alloy were used to make the 11% alloy? lbs. of the 15% alloy and lbs. of the 9% alloy.

True or False: If circumference of a circle is 12*3.14, then its area is 36*3.14.

Jessica wants to give a 20% tip to a taxi driver. if the fare is 23.78 what amount did she tip the driver

A teacher collects data on the number of hours, s, his students spend studying and the number of hours, t, they spend watching TV each day.

7 6 + C 5 + 4 3+ 2+ 1 1 A В 1 2 3 4 5 6 7 х What is the area of abc?

What is the product? (x+3) (2x - 1) 2x²-3 2x²+66 O 2x²+5x-3 2x²+6x-3