Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.4(16x + 20) = 16(2x - 13)
A. Contradiction; ?
B. Identity; {all real numbers}
C. Conditional; {-9}
D. Conditional; {4}
Answer: C
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Identify which of these types of sampling is used: simple random, stratified, systematic, or convenience.A pollster uses a computer to generate 500 random numbers, then interviews the voters corresponding to those numbers.
A. Systematic B. Stratified C. Convenience D. Simple random
Solve. If necessary, round percents to the nearest tenth and all other answers to the nearest whole.One day 72 programmers were sick with the flu. If this were 48% of the total number of programmers, how many programmers were there altogether?
A. 3456 programmers B. 34,560 programmers C. 150 programmers D. 1500 programmers
Solve the equation by factoring.x2 - 10x + 24 = 0
A. {6, -4} B. {-6, 4} C. {-6, -4} D. {6, 4}
Simplify, if possible.
A. 3k2 B. 10k2 C. 3k D. 10