If Sarah reads at an average rate of 21 pages in four nights, how long will it take her to read 140 pages?

How do you answer LM=1/2z+2 MN=3z+3/2 LN=5z+2 btw this is segment addition

Jamila and Anica were rollerblading. They skated 14 miles in 2 hours. If theyskated at a constant rate, how many miles did they skate in 1 hour?

Solve the system by substitution y=4 2x+3y=-20

Classify the random variables below according to whether they are discrete or continuous. a. The floor area of a kitchen. b. The number of bacteria in a particular cubic centimeter of drinking water. c. The dollar amount of the change in your pocket.

If a car used 250.000 W of power to complete a race in 12 s. how much work did the car do?

Devon babysits x hours a week after school for 5$ an hour, and also has a job as a cashier y hours a week for $10 an hour. He wants to earn atleast 70$. He can't work any more than 10 hours a week because of school.

Emergancy final exam! The base length of a triangle is 8 feet and the height is 4 feet. What is the area of the triangle?

4/5+2/3 i need to know the answer so i would know whats the answer.

Identify the slope of the line y=-3x - 4

Suppose you used the Distributive Property to get the expression 12x + 3y - 9. With what expression could you have started?