Solve the problem using your calculator.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. What is the correlation coefficient?

A. 0.678
B. -0.224
C. -0.678
D. 0.224


Answer: D

Mathematics

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Write the prime factorization of the number.63

A. 3 ? 7 B. 3 ? 3 ? 3 ? 7 C. 3 ? 3 ? 7 D. 3 ? 7 ? 7

Mathematics

Solve the inequality. Give the solution set in both interval and graph forms.-37 < 5x - 7 and 5x + 7 < -3

A. [-6, -2]
 
B. [-6, -2)
 
C. (-6, -2]
 
D. (-6, -2)
 

Mathematics

During the construction of an office building, a hammer is accidentally dropped from a height of 16 ft. The distance the hammer falls in t sec is . What is the hammer's velocity when it strikes the ground? What is its acceleration? ? The velocity is __________ ft per second. ? The acceleration is __________ ft per second in the second power.

What will be an ideal response?

Mathematics

Solve the proportion two different ways. First in decimal form, then in fraction form. Write your answer in lowest terms. = 

A. x = 0.06 or x = 
B. x = 0.00326667 or x = 
C. x = 0.02 or x = 
D. x = 0.6 or x = 

Mathematics