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2 years ago

Find the slope of the line.

Mathematics

1 answer:

Lynna [10]2 years ago

5 0

Answer:

The slope is 2

Step-by-step explanation:

Given

$(x_1,y_1) = (2,9)$

$(x_2,y_2) = (-1,3)$

Required

The slope (m)

This is calculated as:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{3 - 9}{-1 - 2}$

$m = \frac{- 6}{-3}$

$m =2$

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How do I graph an inequality in one variable?

Masja [62]

It depends on the variable.

If it's something like x < 2, your graph would be a vertical line at x = 2, and everything to left of that line shaded in (because of the less than).

Similarly for y, except it would be a horizontal line with either everything above or below shaded.

You can have other equations like 0<x<4 where everything between x = 0 and x = 4 would be shaded

7 0

2 years ago

What is the solution to the equation 15=/x/ -5=

muminat

Answer:

This is absolute value equation so collect like terms and find X

15+5=|x|

20=|x|

since it's absolute value it's going to be 20 or -20

7 0

3 years ago

A sport analyst wants to determine the mean salary of a Baseball player for 2015. He believes an estimate of this average salary

djyliett [7]

Answer:

The large sample size 'n' = 199.6569≅ 200

Step-by-step explanation:

Step(i):-

Given Standard deviation of salary for all baseball players for 2015 is about $5,478,384.55

Standard deviation of of salary for all baseball players for 2015

(S.D ) σ = $5,478,384.55

Given estimate of this average salary for all baseball players for 2015

= $497,000

Given Margin of error of error is = $497,000

Level of significance ∝ = 80%

The critical value Z₀.₂₀ = 1.282

Step(ii):-

Margin of error of error is determined by

$M.E = \frac{Z_{0.20} S.D}{\sqrt{n} }$

$497,000 = \frac{1.282 X 5,478,384.55}{\sqrt{n} }$

Cross multiplication , we get

$\sqrt{n} = \frac{1.282 X 5,478,384.55}{497,000 }$

On calculation , we get

√n = 14.13

Squaring on both sides, we get

n = 199.6569

Conclusion:-

The large sample size 'n' = 199.6569≅ 200

7 0

3 years ago

Jeff spent $7.50 at the store. He bought a notebook for $4.00. He also bought 10 pencils. How much did each cost?

DedPeter [7]

Subtract 7.50 - 4.00 and dived that answer by 10

7 0

3 years ago

Read 2 more answers

Pls help with Trigonometric

Sav [38]

The value of the given trigonometry function is 2√15/15

<h3>Half angles</h3>

Half angles are trigonometric identities used to express sine, cosine and tangent of half angles.

For instance the value of cos theta is expressed as shown below;

cosФ = cos(Ф/2+Ф/2)

cosФ = cos²Ф/2-sin²Ф/2
cosФ = cos²Ф/2-(1-cos²Ф/2)
cosФ = 1 - 2cos²Ф/2

Given the following parameters

cosФ = -7/15

Substitute

cosФ = 1 - 2cos²Ф/2

-7/15 = 1 - 2cos²Ф/2

-2cos²Ф/2 = -7/15 - 1

-2cos²Ф/2 = -8/15

cos²Ф/2 = 4/15
cosФ/2 = 2/√15

Rationalize

2/√15 * √15/√15

2√15/15

Hence the value of the given trigonometry function is 2√15/15

Learn more on trigonometry function here: brainly.com/question/2254074

#SPJ1

8 0

1 year ago