How do you add scientific notation

12x? Simplify 2x o6 х3 o 6 х6 o 10 х3 o 10 х5

The cheese that ms. carter used to buy costs $6.00 per pound, but it's been marked up to 15%. suppose ms. carter buys 3.5 pounds of cheese. how much more does it cost at the new price than at the old price?

What is value of the 9 in 973,778

What is the correct 3a (8a-6b)

Greg has 4 shirts: a white one, a black one, a red one, and a blue one. He also has two pairs of pants, one blue and one tan.

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.