What is 21=6+j and 7k=84

A pair of trainers on sale for £54 after a 10% discount workout the original price

Convert 0.000007914 to scientific notation

Which unit of measurement is part of the metirc system

Solve for the roots in the equation below. x4 + 3x2 - 4 = 0

Supposed you list the factors of a perfect square why is one factor a square root and not the other factors?

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.