anthony drives 28 miles to work each day it takes an average of 36 minutes to get there he travels on a highway for part of the distance and the rest of the trip consists of back roads what is his average overall speed in miles per hour

Solve the system of equations. y= 2x y= x^2 - 15

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)