Evaluate the determinant.
A. -350
B. -42
C. 602
D. 42
Answer: D
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A company installs 5,000 light bulbs. The lifetimes of the lightbulbs are approximately normally distributed with a mean of 500 hours and a standard deviation of 100 hours. Find the approximate number of bulbs that can be expected to last the indicated amount of time.Between 540 hours and 780 hours
A. 2,215 B. 1,717 C. 2,217 D. 1,710
Write the sentence as an equation or inequality. Use x to represent any unknown number.Two minus four times a number is 58.
A. 2 - 4x = 58 B. 2x - 4 = 58 C. 4x - 2 = 58 D. 4 - 2x = 58
Identify the intercepts.
A. (3, 0), (0, -6) B. (-3, 0), (0, 6) C. (-6, 0), (0, 6) D. (3, 0), (0, 6)
Solve the problem using the percent equation. Write a sentence answering the question.In Little League, Andrew hit 3 home runs in 12 at bats. What percent of the at bats were home runs?
A. 35% of the at bats were home runs. B. 25% of the at bats were home runs. C. 23% of the at bats were home runs. D. 30% of the at bats were home runs.