Determine the measure of ∠Q, rounded to the nearest tenth of a degree.
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Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2