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3 years ago

10

Write an equation of the line that is perpendicular to 5x+20y=10 and passes through the point (8,3)

1 answer:

natali 33 [55]3 years ago

5 0

Y = 32x - 29

You can get this by solving for slope intercept form and then taking the opposite and recipricol of the slope. Solve the rest using point-slope form.

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Find the distance that the points is given on the graph ?

EleoNora [17]

From the graph, the given points are (2,-1) and (4,0). Use the distance between two points formula:

$\large \boxed{ \sqrt{ {(x_2 - x_1)}^{2} + {(y_2 - y_1)}^{2} } }$

Substitute these points in the formula.

$\large{ \sqrt{ {(2 - 4)}^{2} + {( - 1 - 0)}^{2} } } \\ \large{ \sqrt{ {( - 2)}^{2} + {( - 1)}^{2} } } \\ \large{ \sqrt{4 + 1} \longrightarrow \sqrt{5} }$

Hence, the distance is √5

Answer

√5

7 0

3 years ago

The scale on a map is 1cm=20miles.if two airports are 4cm apart on the map, what's the distance between the airports?

Stels [109]

80 miles because if 1=20 then 2=40 3=60 4=80

8 0

3 years ago

Eight more than three times the difference of four and a number” when n = 3?

Snezhnost [94]

8 + 3 (4 - n )
n= 3
8 + 3( 4-3)
8 + 3 * 1
8 + 3 = 11

8 0

3 years ago

Explain how you would round the numbers 33 and 89 to estmate their sum

ValentinkaMS [17]

Well 33 is rounded down to 30

And 89 is rounded up to 90

So it would be 120

Anything from 1-4 is rounded down and anything 5-9 is rounded up

8 0

3 years ago

Read 2 more answers

/viewform?hr submission=Chclk4feKBIQ.

Gennadij [26K]

Answer:

c) .22

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this question:

$\sigma = 2.5, n = 500$

Then

$M = z*\frac{\sigma}{\sqrt{n}}$

$M = 1.96*\frac{2.5}{\sqrt{500}}$

$M = 0.22$

5 0

3 years ago