Provide an appropriate response.Let M be a 6 × 6 matrix. Which of the following statements are true?(i)I6 M = M(ii)I6 + M = M(iii)MI6 = I6(iv)MI6 = M
A. (ii), (iii)
B. (i), (iii), (iv)
C. (i), (ii), (iii), (iv)
D. (i), (iv)
Answer: D
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Solve the problem by writing and using a system of linear equations.Two bikers start at opposite ends of a trail and bike toward each other. The trail is 225 miles long and they meet in 5 hours. If one biker is twice as fast as the other, find both biking speeds.
A. 13 mph, 26 mph B. 5 mph, 10 mph C. 112.5 mph, 225 mph D. 15 mph, 30 mph
Graph the pair of parametric equations with the aid of a graphing calculator.x = cos t + 4 cos 3t, y = 5 cos t - 4 sin 3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
If the number in the statement is written in scientific notation, write it without exponents. If it is written without exponents, write it in scientific notation.The speed of light is 1.86 × 105 miles per hour.
A. 18,600,000 B. 1,860,000 C. .0000186 D. 186,000
Subtract.10a3 + 8a2
A. 12a3 + 20a2 B. 8a3 - 4a2 C. 8a3 + 20a2 D. 4a5