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2 years ago

Find the slope of a line perpendicular to each given line Y=-4/5x

Mathematics

1 answer:

dimulka [17.4K]2 years ago

3 0

Answer:

5/4

Step-by-step explanation:

If a line is perpendicular to another, its slopes multiply up to -1.

So, we should write x•-4/5=-1

-4x/5=-1

x=-1•(-5/4)

x=5/4

So, we have y=5/4x+b

Slope is just the value before the x, which in this case is 5/4/.

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A factor in determining the usefulness of an examination as a measure of demonstrated ability is the amount of spread that occur

Natali [406]

Answer: . a. 36.08 to 78.80

Step-by-step explanation:

The confidence interval for population standard deviation is given by :-

$\sqrt{\dfrac{(n-1)s^2}{\chi_{\alpha/2}}}$

Given : Sample size = $n=24$

Significance level : $\alpha:1-0.99=0.01$

Using the chi-square distribution table , the critical values would be :-

$\chi_{n-1,\alpha/2}=\chi_{23, 0.005}=44.18127525$

$\chi_{n-1,1-\alpha/2}=\chi_{23, 0.995}=9.26042478$

Then , a 99% confidence interval for the population standard deviation will be :-

$\sqrt{\dfrac{(23)(50)^2}{44.18127525}}$

8 0

3 years ago

Write 4x = 25 as a logarithmic function.

Contact [7]

4 x = 25 log(x)
See the answer here
http://www.wolframalpha.com/input/?i=Write%204x%20%3D%2025%20as%20a%20logarithmic%20function.a

5 0

3 years ago

Jack draw an angle that is 27 out of 36 of a circle.What is the measure of the angle in degrees

34kurt

let's recall that a circle has a total of 360°.

now, Jack drew "27 out of 36", namely 27/36.

what's 27/36 of 360°? well, is simply their product.

$\bf \cfrac{27}{36}\cdot 360\implies 27\cdot \cfrac{360}{36}\implies 27\cdot 10\implies 270$

7 0

3 years ago

HELP PLEASE ASAP

zvonat [6]

The x has an exponent of 2. the exponent of 2 means x squared, which is x•x. this isn't the same as x+x, because x+x=2x whereas x•x=x squared.

3 0

3 years ago

Which value below is not included in the solution set for the inequality statement?

DedPeter [7]

Answer:

kmcokoakv

Step-by-step explanation:

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4 years ago