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3 years ago

The point (-2, 4) is on the line given by which equation below

Mathematics

1 answer:

Zanzabum3 years ago

3 0

It would be B because-2 is x and 4 is y

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I need help on this question

Alona [7]

Answer:

1. equal

2. add to 180

3. equal

4. add to 180

Step-by-step explanation:

as 1 and 3 are linear pairs

2 and 4 are vertically opposite angles

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3 years ago

How to write 1 896 025 in words

igor_vitrenko [27]

Answer:

one million eight hundred ninety-six thousand twenty-five

6 0

3 years ago

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Simplify. 62+42 12 20 52 100

victus00 [196]

Answer:

Not sure of the answer, due to none matching the answer of the expression.

Step-by-step explanation:

62 + 42

104

Hopefully this helps!

Brainliest please?

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3 years ago

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What is -9-x when x= 4.3

Setler79 [48]

Answer: -13.3

Step-by-step explanation:

7 0

4 years ago

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A researcher takes a simple random sample of 83 homes in a city and finds that the mean square footage is 1628 with a standard d

Anna [14]

Answer: (1583.63, 1672.37)

Step-by-step explanation:

Given : Sample size : n= 83

Sample mean : $\overline{x}=1628$

Sample standard deviation : $\sigma=243$

The population standard deviation $(\sigma)$ is unknown .

The confidence interval for population mean :

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}$

For 90% confidence , significance level = $\alpha=1-0.90=0.10$

Using t-distribution table , Critical t-value = $t_{(\alpha/2, n-1)}=t_{0.05,82}=1.6636$

, where n-1 is the degree of freedom.

Now , 90% confidence interval for the mean square footage of all the homes in that city will be :-

$1628\pm (1.6636)\dfrac{243}{\sqrt{83}}\\\\ 1628\pm (1.6636)(26.672715)\\\\\\\\\approx1628\pm 44.37\\\\=(1628- 44.37,\ 1628+ 44.37)\\\\=(1583.63,\ 1672.37)$

Hence, the 90% confidence interval for the mean square footage of all the homes in that city = (1583.63, 1672.37)

7 0

3 years ago