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patriot [66]
3 years ago
15

Write the point slope form of an equation of the line through the points

Mathematics
2 answers:
denis23 [38]3 years ago
7 0

Answer:

the answer is D

how to try the values of the x and y

(x,y)

MA_775_DIABLO [31]3 years ago
4 0

Equation of a line:  y = mx + c,  where m is the slope and c is the y-intercept. To calculate the slope, we do so using the formula: m = \frac{y2 - y1}{x2 - x1}

Now plugging in our values, m = \frac{4 - (-3)}{-7 - (-2)}  = \frac{4 + 3}{-7 + 2} = \frac{7}{-5} = \frac{-7}{5}

So our slope m, is = -7/5

We can now input the value of the slope. But in this question, we cannot use the above equation of a line since we are asked to use a point-slope equation expression, so the equation is y - y1 = m(x - x1)

Now we plug in our values,

y - (-3) = \frac{-7}{5}(x -  (-2))\\y + 3 = \frac{-7}{5}(x + 2)

So the answer should be option D.

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For every $3.00 donated to a certain charity by Club A, $1.25 was donated by Club B. If the combined total amount donated to the
shtirl [24]

Answer:

D, $18,000.00

Step-by-step explanation:

Club A

$3 x is donated where x is the number of donations

Club B

$1.25x  is donated where x is the number of donations

The total of donations is 25500.00

Add the donations  times the dollar amount  for Club A and Club B and you get the total amount donated

$3x +$1.25x = 25500.00

Combine like terms

4.25x = 25500.00

Divide by 4.25 on each side

4.25/4.25x = 25500.00/4.25

x =6000

There were 6000 donations

We want to find Club A donation amount

$3 x is the amount donated

3*6000 = 18000

4 0
2 years ago
Read 2 more answers
Find the value: 3/2 ÷ 5/8 (write your answer as a fraction AND as a decimal number)
Vikki [24]

Answer:

Decimal : 2.4

Fraction: 2 4/10 or 2 2/5

Step-by-step explanation:

hope this helps :) plz mark brainliest to help my rank

4 0
2 years ago
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Find the measure of the angle indicated. <br><br> A. 130°<br> B. 142°<br> C. 145°<br> D. 38°
Inessa [10]

Answer: 142°

Step-by-step explanation:

∡BAC= 38°

∡BAN= 180°-38° = 142°

7 0
2 years ago
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Y is a random variable that is distributed N(-16, 1.21). Find k such that Prob(-15.043 &lt; Y ≤ k) = 0.1546. (Round your answer
IgorLugansk [536]

Transform <em>Y</em> to <em>Z</em>, which is distributed N(0, 1), using the formula

<em>Y</em> = <em>µ</em> + <em>σZ</em>

where <em>µ</em> = -16 and <em>σ</em> = 1.21.

Pr[-15.043 < <em>Y</em> ≤ <em>k</em>] = 0.1546

Pr[(-15.043 + 16)/1.21 < (<em>Y</em> + 16)/1.21 ≤ (<em>k</em> + 16)/1.21] = 0.1546

Pr[0.791 < <em>Z</em> ≤ (<em>k</em> + 16)/1.21] ≈ 0.1546

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] - Pr[<em>Z</em> < 0.791] = 0.1546

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] = 0.1546 + Pr[<em>Z</em> < 0.791]

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] ≈ 0.1546 + 0.786

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] ≈ 0.940

Take the inverse CDF of both sides (<em>Φ(x)</em> denotes the CDF itself):

(<em>k</em> + 16)/1.21 ≈ <em>Φ⁻¹</em> (0.940) ≈ 1.556

Solve for <em>k</em> :

<em>k</em> + 16 = 1.21 • 1.556

<em>k</em> ≈ -14.118

8 0
3 years ago
Scott sends an email to 3 people and each of those people will send the email to 3 more people, and so on. Which
Naddika [18.5K]

Answer:

12 I think I counted it hope it's correct

5 0
2 years ago
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