How many quarts of pure antifreeze must be added to 7 quarts of a 10% antifreeze solution to obtain a 60% antifreeze solution?
quart(s) of pure antifreeze must be added.
(round to the nearest tenth as needed.)

Ataxi company charges $2.25 for the first mile and then $0.20 per mile for each additional mile, or f = $2.25 + $0.20(m - 1) where f is the fare and m is the number of miles. if juan's taxi fare was $6.05, how many miles did he travel in the taxi? if juan's taxi fare was 7.65, how many miles did he travel in taxi

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

The trigonometric ratios sine and secant are reciprocals of each other