Use a graphing calculator to solve the system of equations. Round your solution to one decimal place.1.7x + 10.6y + 3.7z = 3.83.7x - 7.0y - 1.9z = -4.32.8x + 1.5y + 2.3z = 11.5
A. (-5.2, -9.1, 32.8)
B. (-1.9, -3.3, 12.0)
C. (-1.3, -2.2, 8.0)
D. (3.2, 5.6, -20.0)
Answer: C
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A hypothesis test is to be performed. State the null and alternative hypotheses.A consumer group believes that the proportion of defects among computers produced by one manufacturer is greater than the 2% claimed by the company.
A. Null hypothesis: proportion of defectives = 2% Alternative hypothesis: proportion of defectives ? 2% B. Null hypothesis: proportion of defectives = 2% Alternative hypothesis: proportion of defectives > 2% C. Null hypothesis: proportion of defectives > 2% Alternative hypothesis: proportion of defectives = 2% D. Null hypothesis: proportion of defectives < 2% Alternative hypothesis: proportion of defectives > 2%
Answer the question.The probability of rolling an even number on a die is 
. Does this probability mean that, if you roll the die two times, one even number will appear? If not, what does it mean?
A. No, a probability of 
tells us nothing.
B. No. It means that if a die were rolled many times, about 
of the outcomes would be even numbers.
C. Yes.
D. No, but if the die was rolled 10 times, 5 outcomes would be even numbers.
Sketch a typical level surface for the function.f(x, y, z) = cos (x2 + y2 + z2)
A. 
B. 
C. 
D. 
Solve the equation for 
.
?
?
A. 
B. 
C. 
D. 