If 4/5 = 4x1/5, then 5/12 = _ x what over what?

What's X in 2 (x+1) + 4=12

Amy and Roger both wash windows at a large downtown building. Amy can wash 25 windows in 4 hours. Roger can wash 32 windows in 6 hours. How many windows can they wash together in 12 hours?

Translate the sentence into an equation. Five more than the quotient of a number and 7 is equal to 8. Use the variable c for the unknown number.

I am greater than 6 I am less than 20 I have three ones

Solve the system of equations by substitution. 2x + y = 3z x + y = 6z What is the value for y from the first equation, that could be substituted into the second equation? A. - 2x + 3z B. 3z + 2x C. - 2x - 3z D. 2x + 3z

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.