Solve the problem.Each student in a sixth-grade class recorded the amount of time he or she had spent watching television during the previous week. The times (in hours) are listed below. Find the range.20.5?15.1?8.5?19.9?22.4?29.1?14.1?16.5?21.4?21.1
A. 5.4 hr
B. 20.6 hr
C. 22.4 hr
D. 8.5 hr
Answer: B
Mathematics
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Use a power regression model for the following data to answer the following question. If x is multiplied by 4.00, what is the effect on y? Round your answer to two decimal places. x13478y3.2914.0221.4749.4558.91?
A. y is multiplied by 3.73. B. y is multiplied by 6.87. C. y is multiplied by 8.65. D. y is multiplied by 3.47.
Mathematics
Estimate the following mentally.1 ? 8 ? 19 ? 52
A. 1500 B. 1000 C. 20,000 D. 10,000
Mathematics
Find the vertex of the parabola.f(x) = 1.8 - 0.8x + 0.2x2
A. (2, 1) B. (2, -1) C. (-2, 1) D. (0, 0)
Mathematics
Solve the system by using the inverse of the coefficient matrix. x + y + z = 4 x - y + 4z = -195x + y + z = 24
A. No solution B. (-5, 4, 5) C. (-5, 5, 4) D. (5, 4, -5)
Mathematics