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3 years ago

Why are alternate exterior angles congruent?

Mathematics

1 answer:

zmey [24]3 years ago

4 0

Answer:

because they have straight lines and they are regular

Step-by-step explanation:

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13. What is the measure of angle J in the triangle below? Drawing is not to scale. (1 point)

Y_Kistochka [10]

Answer:

i would choose 9°

Step-by-step explanation:

3 0

3 years ago

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3x - 7y + 10 when x = 4 and y =2

Tpy6a [65]

Answer:

Step-by-step explanation:

replace x with 4 and y with 2 in the equation

3x - 7y + 10

3(4) - 7(2) + 10

multiply

12 - 14 +10

add

-2 + 10 = 8

8 0

2 years ago

Read 2 more answers

Agree or desagree ? ..........

jok3333 [9.3K]

Answer:

Disagree.

If you rotate the octagon 90° it will look the same.

<em>good luck, i hope this helps :)</em>

7 0

3 years ago

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We wish to give a 90% confidence interval for the mean value of a normally distributed random variable. We obtain a simple rando

coldgirl [10]

Answer: $(9.27025,\ 11.12975)$

Step-by-step explanation:

Given : Sample size : n= 9

Degree of freedom = df =n-1 =8

Sample mean : $\overline{x}=10.2$

sample standard deviation : $s= 1.5$

Significance level ; $\alpha= 1-0.90=0.10$

Since population standard deviation is not given , so we use t- test.

Using t-distribution table , we have

Critical value = $t_{\alpha/2, df}=t_{0.05 , 8}=1.8595$

Confidence interval for the population mean :

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

90% confidence interval for the mean value will be :

$10.2\pm (1.8595)\dfrac{1.5}{\sqrt{9}}$

$10.2\pm (1.8595)\dfrac{1.5}{3}$

$10.2\pm (1.8595)(0.5)$

$10.2\pm (0.92975)$

$(10.2-0.92975,\ 10.2+0.92975)$

$(9.27025,\ 11.12975)$

Hence, the 90% confidence interval for the mean value= $(9.27025,\ 11.12975)$

6 0

3 years ago

PLEASE HELP!!!!!

poizon [28]

The awnser is A. hope this helps

3 0

2 years ago

Read 2 more answers