Answer:
P = 125/1296
Step-by-step explanation:
P = Number of ways of getting only 4 at the last trial / Total number of ways
Number of ways of getting only 4 at the last trial = 5 * 5 * 5 * 1 = 125
(for the first three trials, all but 4 is permissible (6 - 1 = 5 ways), and
for the last trial, only 4 is permissible (1 way)).
Total number of ways = 6 * 6 * 6 * 6 = 1296
P = 125/1296
D. not enough information to determine
Answer:
-1
Step-by-step explanation:
If 5 + 7 = 17
5 + 7 + ? = 17
5 + 7 = 12 so 17-12 + 5
5 = N
N - 6 = ?
5 - 6 = -1
Answer: Choice D
y = cos(x+pi)
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Explanation:
Make sure your calculator is in radian mode.
If we plug x = 0 into each answer choice, we get the following
Choice A: y = cos(x+pi/2) = cos(0+pi/2) = 0
Choice B: y = cos(x+2pi) = cos(0+2pi) = 1
Choice C: y = cos(x+pi/3) = cos(0+pi/3) = 1/2 = 0.5
Choice D: y = cos(x+pi) = cos(0+pi) = -1
Only choice D has x = 0 lead to y = -1.
Therefore (0,-1) is a point on the equation of choice D. The graph shows this visually through the y intercept, where the graph crosses the y axis.