Simplify the expression. Write the answer using scientific notation. (4 x 10^13) ^-2 - 8 x 10^-26 6.25 x 10^-27 0.0625 x 10^-26 6.25 x 10^-28

Find the perimeter of a square equal in area to two squares whose sides are 12 m and 5 m respectively

A mixture of 12 ounces of vinegar and oil is 40%n vinegar by weight. How many ounces of oil must be added to the mixtue to produce a new mixture that is only 25% vinegar?

What is ninrteen times x divided by 100

To make a batch of purple frosting, you need 28 drops of blue food coloring and 21 drops of red food coloring. What is the ratio of red drops to blue drops in simplest form?

A right triangle has exterior angles at each of its acute angles with measures in te ratio 13:14. find the measures o the two acute angles of the right triangle.

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.