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2 years ago

The slope of a line is . What is the slope of a line perpendicular to this line?

Mathematics

1 answer:

PSYCHO15rus [73]2 years ago

6 0

Where is the image? There isn’t an image to look at for me to solve you question !

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How do you calculate the population mean

bazaltina [42]

Add up all the numbers then divide how many ever digits there are

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3 years ago

The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

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3 years ago

What is the product of two odd numbers and a multiple of 2

ASHA 777 [7]

Answer: a number

Explanation: choose the odd numbers and I’ll answer but right now how bout you ask my hood friend google

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3 years ago

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Sonja's credit card has an APR of 21%, calculated on the previous monthly

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Answer: D 87%

Step-by-step explanation:

Ap-ex

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2 years ago

Is this a function?<br><br> A) Yes<br> B) No

Vinil7 [7]

Answer:

no, this is not a function

Step-by-step explanation:

i hope this helps :)

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3 years ago

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