Line segment XY is 12 units long. Line segment X'Y' is the image of XY under a dilation with a scale factor of . What is the length of X'Y'?
O A 4 units
OB. 9 units
O C. 16 units
OD. 48 units

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)

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

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