Solve the problem.The sum of the measures of the angles of any triangle is 180°. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 90° larger than each of A and B. What are the measures of the three angles?
A. A and B: 120°; C: 30°
B. A and B: 30°; C: 120°
C. A and C: 100°; B: 40°
D. A and B: 40°; C: 100°
Answer: B
Mathematics
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A. 2
B. 2
C. 
D. 
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Find the indicated probability or percentage for the normally distributed variable.The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy lasts at least 300 days?
A. 0.983 B. 0.018 C. 0.017 D. 0.483
Mathematics
Use DeMoivre's Theorem to write the expression in rectangular form.
4
A. -4i B. -4 C. 4i D. 4
Mathematics
Determine whether the two expressions appear to be equivalent by evaluating both expressions for several different values of x.9z + 7(z - 4); 16z - 4
A. Not equivalent B. Equivalent
Mathematics