Find the exact value by using a half-angle identity.tan 75°
A. 2 - 
B. -2 + 
C. 2 + 
D. -2 - 
Answer: C
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Write a chain rule formula for the following derivative.
for u = f(v); v = h(s, t)
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Find the x-intercepts and the y-intercept for the parabola whose equation is given. If an intercept is an irrational number, round it to the nearest tenth.y = x2 - 5x + 1
A. x-intercepts: -4.8 and 0.2; y-intercept: -1 B. x-intercepts: 4.8 and 0.2; y-intercept: 1 C. x-intercepts: 4.8 and -0.2; y-intercept: -1 D. x-intercepts: -4.8 and -0.2; y-intercept: 1
Construct the specified histogram.Eighty U. S households were surveyed about MP3 players. The table gives the frequency distribution for the data.
Construct a histogram.
What will be an ideal response?
Find the probability.If 80% of scheduled flights actually take place and cancellations are independent events, what is the probability that 3 separate flights will all take place?
A. .01 B. .64 C. .51 D. .80