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3 years ago

WILL GIVE A 5 STAR RATING A THANKS A BRAINLIEST and 12 points.

Mathematics

2 answers:

Sauron [17]3 years ago

4 0

since there are 180 degrees in a triangle so :

65+72+y=180 add like terms

137 + y=180 now subtract 137

y= 180-137

y=43 degrees

Jlenok [28]3 years ago

4 0

All Triangle's equal 180 degrees.

So to find this out......72+65=137

180-137=43

The missing angle equals 43 degrees.

-Seth

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What is the domain of this graph?

jolli1 [7]

Answer:

B 0 ≤x≤9

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The domain is the input values of the graph. In this graph it is the values that the time variable takes.

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3 years ago

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Virty [35]

Answer:

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3 years ago

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mart [117]

Answer:

25%

Step-by-step explanation:

to find the original cost of a single shirt:

4000 / 500 = $8

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5 0

3 years ago

The average daily volume of a computer stock in 2011 was ų=35.1 million shares, according to a reliable source. A stock analyst

Shtirlitz [24]

Answer:

The null hypothesis is $H_o : \mu = 35 .1 \ million \ shares$

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The 95% confidence interval is $27.475 < \mu < 37.925$

Step-by-step explanation:

From the question the we are told that

The population mean is $\mu = 35.1 \ million \ shares$

The sample size is n = 30

The sample mean is $\= x = 32.7 \ million\ shares$

The standard deviation is $\sigma = 14.6 \ million\ shares$

Given that the confidence level is $95\%$ then the level of significance is mathematically represented as

$\alpha = 100-95$

$\alpha = 5\%$

=> $\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table

The value is $Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{ \sigma }{\sqrt{n} }$

substituting values

$E = 1.96 * \frac{ 14.6 }{\sqrt{30} }$

$E = 5.225$

The 95% confidence interval confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

substituting values

$32.7 - 5.225 < \mu < 32.7 + 5.225$

$27.475 < \mu < 37.925$

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3 years ago

If there are:

ruslelena [56]

Answer:

0.06

Step-by-step explanation:

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6 + 10 + 5 + 1 = 22 marbles

Probability of picking 1 red marble:

red marbles / total marbles

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Probability of picking a green marble:

green marbles / total marbles

5/22

Now, multiply the probabilities:

6/22 • 5/22 = 15/242 = 0.06

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3 years ago