Sa se calculeze a) (-2a b

3x-8y) + (a - 5b

2x 6y)

Putting the Tiles in Order; A university is conducting a survey to study the number of hours students sleep at night during exam week. A sample of 20 students was drawn, and these responses were obtained: 6.5, 5, 8, 5.5, 7, 4, 4.5, 5, 6, 5.5, 4, 7.

2 feet are how many yards (in fraction form) ?

Jane thought of a number then added - 5 and subtracted - 8 to get 13. What number did Jane start with

Why did paolo add 3 (x+2) to itself and subtract 8

What is a true statement found in Billion-Dollar Weather and Climate Disasters

One interpretation of a baseball player's batting average is as the empirical probability of getting a hit each time the player goes to bat. If a player with a batting average of 0.2260.

How many different ways are there to choose a chairman, assistant chairman, and a treasurer department of 20 people? How many ways are there to choose a committee of 4 people from this same committee?

What's the difference between graphing and equality with a closed dot and one with an open dot

Translate the following sentence into an equation. Use x to represent an unknown number. Do not solve. The sum of twice a number and 19 is equal to five times the number. Write an equation for the given conditions

In 1992, Jason bought a gallon of gas for $1.21. Yesterday, he bought a gallon of gas for $2:16. What is the percentage increase of the price of gallon of gas from 1992 to yesterday.