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umka2103 [35]
4 years ago
5

For what x-value(s) does cos(x) = -1

Mathematics
1 answer:
nikklg [1K]4 years ago
6 0
\cos x=-1\to x_o=180^o\\\\\boxed{x=180^o+360^ok\ for\ k\in\mathbb{Z}}
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The ratio of red balloons to blue balloons is 4 to 11. There are 133 more blue balloons than red balloons. How many blue balloon
Kay [80]
The ratios of blue balloons to red balloons is 137 red balloons to 144 blue balloons

5 0
3 years ago
The results of a series of surveys revealed a population with a mean of 4.73 and a standard deviation of 0.865. If each survey h
satela [25.4K]

The given sample's confidence interval is 4.73 ± 0.1199, or from 4.61 to 4.85

<h3>What is the z score?</h3>

The z-score is a numerical assessment of a value's connection to the mean of a set of values, expressed in terms of standards from the mean, that is used in statistics.

Given data;

Mean  = 4.73

Standard deviation  = 0.865

Sample size  = 200

interval  = 95%

Confidence interval=?

95% of samples contain the population mean (μ) within the confidence interval of 4.73 ± 0.1199.

Hence, the sample's confidence interval is 4.73 ± 0.1199, from 4.61 to 4.85

To learn more about the Z score, refer to;

brainly.com/question/15016913

#SPJ1

4 0
3 years ago
Esmerelda rents a car from a company that rents cars by the hour. She has to pay an initial fee of $52, and then they charge her
Kisachek [45]

C

first set up an equation

$52+8n ≥ 144

bacause she can spend 144 or less

solve 144-52=92

92/8=11.5

6 0
3 years ago
‼️please help ASAP.
USPshnik [31]
Try to do them on math -way
6 0
3 years ago
Sines/ Cosines topic. In the triangle below round to the nearest tenth. Include explanation if possinle
vredina [299]

By the law of sines,

\dfrac{\sin90^\circ}{17}=\dfrac{\sin y^\circ}9

\implies\sin y^\circ=\dfrac9{17}

(since \sin90^\circ=1)

\implies y=\sin^{-1}\left(\dfrac9{17}\right)\approx32.0

4 0
3 years ago
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