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mel-nik [20]
3 years ago
15

Which of the following functions is not a sinusoid?

Mathematics
2 answers:
Nezavi [6.7K]3 years ago
8 0
A sinusoid is cyclical and has a period or frequency.

y = sin x is a sinusoid, with a period of 2π.
y = √x is not a sinusoid.
y = cos x is a sinusoid with a period of 2π.

Answer: y = √x is not a sinusoid.
drek231 [11]3 years ago
5 0
That’s the correct answer
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From a July 2019 survey of 1186 randomly selected Americans ages 18-29, it was discovered that 248 of them vaped (used an e-ciga
jasenka [17]

Answer:

The 90% confidence interval is (0.1897, 0.2285).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

Z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}

For this problem, we have that:

From a July 2019 survey of 1186 randomly selected Americans ages 18-29, it was discovered that 248 of them vaped (used an e-cigarette) in the past week. This means that n = 1186, \pi = \frac{248}{1186} = 0.2091

Construct a 90% confidence interval to estimate the population proportion of Americans age 18-29 who vaped in the past week.

So \alpha = 0.10 , z is the value of Z that has a pvalue of 1 - \frac{0.10}{2} = 0.95, so z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2091 - 1.645\sqrt{\frac{0.2091*0.7909}{1186}} = 0.1897

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2091 + 1.645\sqrt{\frac{0.2091*0.7909}= 0.2285

The 90% confidence interval is (0.1897, 0.2285).

3 0
3 years ago
If the adjacent is 8, the opposite is 15, and the hypotenuse is 17. Express sin H as a fraction in simplest terms.
Serggg [28]

Answer:

\frac{15}{17}

Step-by-step explanation:

Have a nice day

5 0
3 years ago
Can anyone solve these 3 equations?
Nesterboy [21]

Answer:

1. x = 1, -2

2.  no solution

3.  x = 6 -4

hope this helps!

Step-by-step explanation:


3 0
3 years ago
PLEASE HELP WITH 17 and 18
Zinaida [17]
17
linear has 1 as highest exponent
D has x^2
D is not linear



18. find slope
(y2-y1)/(x2-x1)=(-1-2)/(0-4)=-3/-4=3/4
y=3/4x+b

B is answer
8 0
3 years ago
What is the value of a in the equation 5a-10b=45, when b=3?
Ainat [17]

Answer:5a-30=45


Step-by-step explanation:

So something times 5 minus 30 will give you 45


8 0
3 years ago
Read 2 more answers
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