Answer:
The answer is a. cos2x - sin2x - sin x. Use the rule: cos2x = (cos^2)x - (sin^2)x. So, substitute cos2x in the expression: cos2x - sinx = ((cos^2)x - (sin^2)x) - sinx = (cos^2)x - (sin^2)x - sinx. Therefore, choice a. is correct choice.
157= one hundred and fifty seven
It is D. 1/800 as she is just as likely to be picked as Larry
Hey there! :)
Answer:
C.
Step-by-step explanation:
For a graph to have a change in amplitude, there must be a coefficient in front of the equation, or the 'a' value.
Recall that the transformation form of a trigonometric graph is:
y = ±a(cos(b(x-h))+k
Where 'a' is the amplitude
'b' changes the period
'h' is a horizontal shift
'k' is a vertical shift
We can look at each choice and eliminate:
A. There is only a coefficient of -1 in front of the equation, which simply results in a reflection over the x-axis. This is incorrect.
B. This equation contains a b value of 2. This changes the period of the graph, not the amplitude. This is incorrect.
C. This equation contains a coefficient, or 'a' value of -2. The amplitude is changed by a factor of 2. This is correct.
D. This graph only contains a vertical shift of 1 unit up. This is incorrect.
Therefore, C is the correct answer.
Answer:
2
Step-by-step explanation:
To solve this equation, you need to convert 2 1/2 into an improper fraction:
2 1/2 = 5/2
Then, you convert this into 6ths:
5/2 = 15/6
Next, you divide 15/6 by 5/6:
15/6 / 5/6 = 3
Because Jamal wouldn't make a stop at the end (it wouldn't be considered a stop because he is done), you subtract 1:
3-1=2
The answer is 2 (hope this helps, sorry if i got it wrong)
