How can I find out if 80 is 25% of a number

70a; evalúate when a = 5

Which pair of measurements is not equivalent? 340 mm, 0.34 m 720 cm, 7.2 m 9.6 cm, 96 mm 1256 m, 12.56 km

Which number is a factor of 18? 7 4 3 5

A rectangular prism has a surface area of 286 ft squared. The base is 5ft by 7ft what is the height of the prism?

The row-echelon form of the augmented matrix of a system of equations is given. Find the solution of the system. 1 0 - 1 - 3 0 1 5 - 4 0 0 1 1 A. x = - 3 y = - 9 z = 1 B. x = 2 y = - 9 z = 1 C. x = - 2 y = - 9 z = 1 D. x = 3 y = - 9 z = 1

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.