Translate the sentence into an equation. Use x to represent the unknown number. Do not solve.Eight times a number is equal to the sum of four times the number and 19.
A. 8x = 4x + 19
B. 8x = 4(x + 19)
C. 8x = 4 + 19x
D. 8x + 19 = 4x
Answer: A
Mathematics
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Solve the problem.A jet-powered car is able to go from 0 mph to 260 mph in 5 sec. What acceleration is required?
A. 52 mph per sec. B. 48 mph per sec. C. 54 mph per sec. D. 255 mph per sec.
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Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
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Find the probability.An urn contains balls numbered 1 through 20. A ball is chosen, returned to the urn, and a second ball is chosen. What is the probability that the first and second balls will be a 7?
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