a number is multiplied by 3 and then 7 is added. The result is doubled, giving the answer 80. Using n to represent the original number. Write an equation

Do all quadrilaterals with perpendicular diagonals also have all four sides congruent? Explain your answer.

What does about mean in a math problem?

Drag the descriptions of each investment into order, from which will earn the least simple interest to which will earn the most simple interest. 1. Investment of $3,000 at 16% simple interest for 2 years 2.

Find 3 different ratios that are equivalent to 7:3. Explain why these ratios are equivalent.

There are 461 students and 20 teachers taking buses on a trip to a museum. Each bus can seat a maximum of 52. What is the least number of buses needed for the trip?

Ed fills his water bottle with 1.2 liters of water. After his bike ride, he drinks 200 millimeters of the water. How much is left in Ed's water bottle.

A door wedge is 5 cm tall. Its has 3.7 cm high triangular bases with 2 congruent 5 cm sides and a 4 cm side. What is its surface area?

John asked the players on his hockey team their height in inches and listed the results below. What is the range of the data set? Round to the nearest tenth when necessary 76, 72, 70, 68, 72, 62

The cost of 4 cartons of fresh cream is $7.96. what is the cost of 14 such cartons? $15.99 $21.96 $24.56 $27.86

Allie and Samuel are rock climbing *Allie climbs 5 1/2 meters in the first 1/4 hour. *Samual climbs 14 1/4 meters in the first 3/4 hour. each person's rate stays the same for the first hour they climb.