A ball rolls 4.34 feet each second. how far will it roll in 2.8 seconds

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how