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2 years ago

How to find point slope equation from (-1,-10) and (5,2) Y-2=???

Mathematics

1 answer:

Ierofanga [76]2 years ago

7 0

Answer:

This equation would be y - 2 = 2(x - 5)

Step-by-step explanation:

In order to find this, we first need to find the slope.

m(slope) = (y1 - y2)/(x1 - x2)

m = (2 - -10)/(5 - -1)

m = 12/6

m = 2

Now that we have this, we can use this and the point (5, 2) to write the point-slope form.

y - y1 = m(x - x1)

y - 2 = 2(x - 5)

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24 is 120% of what number?

laiz [17]

120÷100= 1.2
24÷1.2= 20
24 is 120% of 20

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2 years ago

Suppose we take two different random samples from the same population of test scores. The population mean and standard deviation

Leto [7]

Answer:

The 95% confidence interval obtained with a sample size of 64 will give greater precision.

Step-by-step explanation:

We are given the following in the question:

A 95% confidence interval is calculated with the following sample sizes

$n_1 = 25\\n_2 = 64$

The population mean and standard deviation are unknown.

Effect of sample size on confidence interval:

As the sample size increases the margin of error decreases.
As the margin of error decreases the width of the confidence level decreases.
Thus, with increased sample size the width of confidence level decreases.

If we want a confidence interval with greater precision that is smaller width, we have to choose the higher sample size.

Thus, the 95% confidence interval obtained with a sample size of 64 will give greater precision.

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2 years ago

Rewrite using a negative exponent. 5/x^2

SashulF [63]

Answer:

5x^-2 is rewritten as a negative exponent

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2 years ago

What are the factors of 150 and 40? Please help me.

posledela

Answer:

40: 1, 2, 4, 5, 8, 10, 20, 40

150: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150

Step-by-step explanation:

6 0

2 years ago

Work out the size of one of the exterior angles

hodyreva [135]

Given Information :-

⠀

A polygon with 10 sides ( Decagon )

⠀

To Find :-

⠀

The value of one of the exterior angles

⠀

Formula Used :-

⠀

$\qquad \diamond \: \underline{ \boxed{ \pink{ \sf Exterior ~angle = \dfrac {360^\circ}{no. ~of~sides}}}} \: \star$

⠀

Solution :-

⠀

Putting the given values, we get,

⠀

$\sf \dashrightarrow Exterior ~angle = \dfrac{360 ^\circ}{10} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \frac{36 \cancel{0}^\circ}{ \cancel{10}} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \underline{ \boxed{ \frak{ \red{36^\circ}}}} \: \star \\ \\$

Thus, the value of the exterior angles of a Decagon is 36°.

⠀

$\underline{ \rule{227pt}{2pt}} \\ \\$

8 0

1 year ago

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