Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). Let x represent the measure of angle ACD, and let y represent the measure of angle BCF. The value of x is ° and the value of y is °.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 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 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

How is working backward similar to solving an equation?