How do I minus 13-9 1/8=

What's a simple definition of the term Covalent Bond?

What is Inverse property of addition

What's 1.49 rounded to the nearest tenth

X2 + 4x + xy + 4y Whats the answer for this?

Given circle C with center (2,-2) and radius 2, circle D with center (0,3) and radius 6 Prove circle C is similar to circle D

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.