A coin is dropped from a window. Find the coin's (a) average speed during the first 4 sec of fall and
(b) instantaneous speed at t = 4.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)