Compute r, the linear coefficient of correlation, for the given data.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters):
A. 0.256
B. 0.196
C. 0
D. -0.210
Answer: B
Mathematics
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Perform the indicated operation.-2 - 13
A. 11 B. 15 C. -11 D. -15
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Round the whole number to the given place value.84,999, tens
A. 85,000 B. 84,000 C. 84,900 D. 84,990
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Factor the trinomial, or state that the trinomial is prime.9x2 + 12x + 4
A. (3x - 2)(3x - 2) B. prime C. (9x + 2)(x + 2) D. (3x + 2)(3x + 2)
Mathematics
Use the substitution method to solve the system.6x + 7y = -424x + 4y = -28
A. (-8, 1) B. (-7, 0) C. (-7, 1) D. No solution
Mathematics