Use back-substitution to solve the system of linear equations.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: D
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Use Bayes' rule to find the indicated probability.Two shipments of components were received by a factory and stored in two separate bins. Shipment I has 2% of its contents defective, while shipment II has 5% of its contents defective. If it is equally likely an employee will go to either bin and select a component randomly, what is the probability that a defective component came from shipment II?
A. 0.714 B. 0.222 C. 0.5 D. 0.2
Write the expression in the standard form a + bi.i15
A. -1 B. i C. -i D. 1
Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.
A. Quadratic; leading coefficient negative B. Linear C. Quadratic; leading coefficient positive
Express the interval in set builder notation and graph the interval on a number line.[3.5, ?)
A. {
x ? 3.5}
B. {
x < 3.5}
C. {
x ? 3.5}
D. {
x > 3.5}