Use the Pythagorean Theorem to find the missing length in the right triangle.
A. 2
B. 8
C. 
D. 5
Answer: D
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Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(1, 1)}
B. infinitely many solutions; {
x + y = 6} or {
x = -y}
C. {(1, 5)}
D. no solution; ?
Use a sum-to-product identity to rewrite the expression.sin 8° sin 28°
A. 2cos 18.0° cos (-10.0°) B. 2sin 18.0° sin (-10.0°) C. 2cos 18.0° sin (-10.0°) D. 2sin 18.0° cos (-10.0°)
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.e x + 8 = 5
A. {-6.39} B. {-6.30} C. {-5.44} D. {2.56}
Solve the problem.Tom Quig traveled 210 miles east of St. Louis. For most of the trip he averaged 60 mph, but for one period of time he was slowed to 10 mph due to a major accident. If the total time of travel was 6 hours, how many miles did he drive at the reduced speed?
A. 30 miles B. 40 miles C. 25 miles D. 50 miles