Chapter 15: Problem 20
Simplify. $$ 0-32 $$
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Chapter 15: Problem 20
Simplify. $$ 0-32 $$
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Rod is a pilot for Crossland Airways. He computes his flight time against a headwind for a trip of \(2900 \mathrm{mi}\) at \(5 \mathrm{hr}\). The flight would take \(4 \mathrm{hr}\) and \(50 \mathrm{min}\) if the headwind were half as great. Find the headwind and the plane's air speed.
Remove parentheses and simplify. $$ 3-2[5(x-10 y)-(3+2 y)] $$
Multiply. $$ -2(15-3 x) $$
Solve each system using the substitution method. $$ \begin{aligned} &9 x+2 y=3\\\ &3 x-6=y \end{aligned} $$
Simplify. $$ 2-\left(3^{3}+16 \div(-2)^{3}\right) $$
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