Which of the following is not a ratio?
a. 4 feet/9 feet
b. 12 miles/8 gallons
c. 12 miles/20 miles
d. 4 gallons/9 gallons

Which math sentence can be used to determine if the triangle is a right triangle?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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.