How many times smaller is the surface area of a cube if the side length is multiplied 1/2

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Write the pair of fractions as a pair of fractions with a common denominator