Which of the following is not true?
?
A. ?A Straight angle has a measure of 180?.
B. ?Complementary angles have measures that add up to 180?.
C. ?Supplementary angles have measures that add up to 90?.
D. ?Complementary angles have measures that add up to 90?.
E. ?ARight angle is 90?.
Answer: B
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Find the zeros of the polynomial function.p(x) = x2 + 6x - 72
A. {-72, -12, 0, 6} B. {-72, -12, 6} C. {-12, 6} D. {12, 6}
Compute the values of f(x) and use them to determine the indicated limit.If f(x) = 
- 2, find 
f(x).
A. 
; limit = ?
B. 
; limit = 1.95
C. 
; limit = 1.50
D. 
; limit = 0
Use the theoretical probability formula to solve the problem. Express the probability as a simplified fraction.This problem deals with eye color, an inherited trait. For purposes of this problem, assume that only two eye colors are possible, brown and blue. We use b to represent a blue eye gene and B a brown eye gene. If any B genes are present, the person will have brown eyes. The table shows the four possibilities for the children of two brown-eyed (Bb) parents. Second Parent B bFirst Parent B BB Bb b Bb bbFind the probability that these parents give birth to a child who has blue eyes (bb).
A. 1
B. 
C. 0
D. 
As part of a statistics project, a 6th grade teacher brings to class a container with 300 red marbles and 500 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 40 marbles from the container. Of the 40 marbles drawn, 16 are red.The sampling error is most likely a result of
A. a confounding variable. B. sampling bias. C. sampling variability. D. nonresponse bias. E. none of these