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Airida [17]
3 years ago
13

Question and choices are in the photo please explain the answer

Mathematics
1 answer:
den301095 [7]3 years ago
4 0

Answer:

51°

Step-by-step explanation:

Plain reasoning:

the arc of CD is 180°

78° is alrdy cut out for AB

the rest (102°) has to be equally decided between AC and BD

pls brainliest (although a second answer is needed to give the crown)

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-2(x+1)+5x= 3(x+1) - 2
cricket20 [7]

Answer:

no solution

Step-by-step explanation:

-2x - 2 + 5x = 3x + 3 - 2

3x - 2 = 3x + 1

3x = 3x + 3

0 = 3

no solution

6 0
3 years ago
Please help me on this math problem!
creativ13 [48]

Answer:

427 feet.

Step-by-step explanation:

8 0
3 years ago
A spinner is divided into five colored sections that are not of equal size, red, blue,
Kruka [31]

Answer:

drivers license

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I got my driver's license last week

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Step-by-step explanation:

6 0
3 years ago
Determine the margin of error, m m , of a 90% confidence interval for the mean IQ score of all students with the disorder. Assum
Vsevolod [243]

Answer:

The margin of error is 6.45.

Step-by-step explanation:

The complete question is:

As an early intervention effort, a school psychologist wants to estimate the average score on the Stanford-Binet Intelligence Scale for all students with a specific type of learning disorder using a simple random sample of 36 students with the disorder.

Determine the margin of error, of a 99% confidence interval for the mean IQ score of all students with the disorder. Assume that the standard deviation IQ score among the population of all students with the disorder is the same as the standard deviation of IQ score for the general population, σ = 15 points.

The (1 - <em>α</em>)% confidence interval for population mean <em>μ</em> is:

CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}

The margin of error for this interval is:

MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}

Given:

<em>n</em> = 36

σ = 15

(1 - <em>α</em>)% = 99%

Compute the critical value of <em>z</em> for 99% confidence level as follows:

z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.58

*Use a <em>z</em>-table.

Compute the value of MOE as follows:

MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}

          =2.58\times\frac{15}{\sqrt{36}}

          =2.58\times 2.5\\=6.45

Thus, the margin of error is 6.45.

5 0
3 years ago
Can someone help me and explain what to draw? I need this done ASAP
Scrat [10]

Answer: VV

Step-by-step explanation:

6 0
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