Solve by elimination 2x-4y=8 and 3x-2y=8

There are 5 envelopes in a box. The envelopes contain a penny, a nickel, a dime, a quarter, and a half-dollar. A person selects an envelope. Find the expected value of the draw

Joshua's goal is to sell more than 20 items at a farmers' market. So far, he has sold 6 items. Each of his customers buys 2 items. Let c represent the number of additional customers Joshua must have to meet his goal.

the table shows how the number of sit-ups Maria does each day has changed over time. At this rate, how many sit-ups will she do on day 12? day 1 - 17, day 2 - 21, day 3 - 25, day 4 - 29, day 5 - 33

What is the percent increase from 250 to 900? 1. Write the percent change formula for an increase. Percent Increase = Amount of Increase Original Amount 2. Substitute the known quantities for the amount of the increase and the original amount.

In f (x) = 2x^2-8x-10 the y intercept is at and the x intercepts are (-1,0) and

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.