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Gemiola [76]
3 years ago
11

Pls help^^^^ i dont understand this hw

Mathematics
1 answer:
7nadin3 [17]3 years ago
8 0

Answer:

h=6y/q∧3

Step-by-step explanation:

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Help i cannot do this<br> .................
jarptica [38.1K]

Answer:

3.35

Step-by-step explanation:

look at the picture

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2 years ago
What are the roots of the equation x^2-10x+74=0x <br> 2−10x+74=0 in simplest a+bia+bi form?
laiz [17]

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Step-by-step explanation:

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2 years ago
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A commonly used IQ test is scaled to have a mean of 100 and a standard deviation 15. A school counselor was curious about the av
Licemer1 [7]

Answer: (103.74,112.06)

Step-by-step explanation:

The confidence interval for population mean is given by :_

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 50

Sample mean : \overline{x}=107.9

Standard deviation : \sigma=15

Significance level : \alpha: 1-0.95=0.5

Critical value : z_{\alpha/2}=1.96

Then the 95% confidence interval for the student IQ in the school will be :-

107.9\pm (1.96)\dfrac{15}{\sqrt{50}}\\\\\approx107.9\pm0.075\\\\=(107.9-4.16,107.9+4.16)=(103.74,112.06)

Hence, the 95% confidence interval for the student IQ in the school= (103.74,112.06)

4 0
3 years ago
−54 ÷ −9 =<br> help plzzz
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6

Step-by-step explanation:

5 0
3 years ago
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A rotating lawn is sprinkler sprays water in a circular area of grass, as shown in the picture. The diameter of the circle area
Ber [7]

Answer:

201.06 square feet.

Step-by-step explanation:

=> The diameter of a circle is equal twice its radius. So we divide the diameter by 2 to get its radius.

=> The area of any given circle is π times the square of the radius. The radius of this circle is equal to 8 feet.

=> Area of the circle = π × r² = 3.1415 × 8 feet = 201.056 square feet

8 0
3 years ago
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