What is sum or difference for 2/5 2/3

A sequence in which each term is found by adding the same number

There are about 6 billion people on Earth. If they all lined up and held hands, how long of a line would they form in km? (Assume each person is 1 meter apart.)

What's Equivalent expression 7*-56-28

What is the answer to 1/5 + 3/4

What is the factor of 5x^2 + 10x

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.