Convert negative 31 degrees fahrenheit to celsius.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?