Verify that the values of the variables listed are solutions of the system of equations.
x = -1, y = 2, z = 4
A. solution
B. not a solution
Answer: B
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Use the counting principle to obtain the answer.A restaurant offered salads with 3 types of lettuce, 3 different toppings, and 6 different dressings. How many different types of salad could be offered?
A. 36 B. 27 C. 54 D. 12
In order to determine the effects of a new pill that is supposed to reduce hair loss, a researcher conducts a study. Five hundred volunteer subjects (300 men and 200 women) all of which suffer some degree of hair loss are selected to participate in the study. The researcher gives the women the real pill and the men a sugar pill, but only the researcher knows this.Which of the following statements is not true about this situation?
A. The study is a double-blind experiment. B. The study is not a blind experiment. C. The study is a double-blind experiment, but not a blind experiment. D. The study is a blind experiment, but not a double-blind experiment. E. All of these statements are true.
Write the coordinates for each point.
A. C(-2, -3); D(1, -3) B. C(1, 12); D(-3, 4) C. C(-2, 1); D(4, -3) D. C(-2, 1); D(-3, 4)
Verify the identity.
= cos(2?)
What will be an ideal response?