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trasher [3.6K]
3 years ago
13

(20,-3) (19,-20) formula is: y2-y1/x2-x1

Mathematics
2 answers:
Orlov [11]3 years ago
6 0

Answer:

17

Step-by-step explanation:

The first thing to do is plug in the numbers for the equation. Starting with:

[-20-(-3)]/(19-20)

When you answer that you simplify the answer to

(-20+3)/(19-20)

You answer what is in the parenthesis first.

(-17)/(-1)

After this step you simplify.

17.

The answer is seventeen because any number over 1 is just the number. For example, 3/1=3. The answer is positive because the negative in the numerator and denominator cancel eachother out. leaving the answer as 17.

ad-work [718]3 years ago
5 0
The answer would be 17 if I’m correct
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PLz help I will give brainliest!!!!! and extra points
Natalija [7]

Hey there!

<u></u>

The answer to your question is 95.55<u></u>

<u></u>

<u>Formulas:</u>

<u></u>

<em>Area of semi-circle = </em>\frac{1}{2}(\pi r^2)<em></em>

<em>Area of rectangle = </em>lw<em></em>

<em>Area of triangle = </em>\frac{bh}{2}<em></em>

<em></em>

<u>Now solve:</u>

<em>semi-circle</em>

\frac{1}{2}\pi3^2

\frac{1}{2}\pi9

4.5\pi

<em>(We will use 3.14 as approx. for pi)</em>

<em />4.5 * 3.14\\23.55

<em>rectangle</em>

10(6)\\60

<em>triangle</em>

<em />\frac{4(6)}{2}<em />

<em />\frac{24}{2} \\12<em />

<em>Now add them all together:</em>

<em />23.55+60+12\\95.55<em />

<em />

Have a terrificly amazing day!

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3 0
3 years ago
There are 140 rooms in a hotel. 20% have been decorated since the hotel opened. How many have not been redecorated?
vaieri [72.5K]

Answer:

112 rooms

Step-by-step explanation:

Simply if 10% of 140 is 14 20% of 140 is 28. So then 28 substract 140 is 112

6 0
3 years ago
Read 2 more answers
Listed below are the top 10 annual salaries​ (in millions of​ dollars) of TV personalities. Find the​ range, variance, and stand
valentina_108 [34]

Answer:

Step-by-step explanation:

The given data is

42 40 39 31 22 18 15 12 11.7 10.5

Range = 42 - 10.5 = 31.5

Mean = (42 + 40 + 39 + 31 + 22 + 18 + 15 + 12 + 11.7 + 10.5)/10 = 24.12

n = 10

Variance = Summation(x - mean)²/n

Summation(x - mean)² = (42 - 24.12)^2 + (40 - 24.12)^2 + (39 - 24.12)^2 + (31 - 24.12)^2 + (22 - 24.12)^2 + (18 - 24.12)^2 + (15 - 24.12)^2 + (12 - 24.12)^2 + (11.7 - 24.12)^2 + (10.5 - 24.12)^2 = 1452.396

Variance = 1452.396/10 = 145.2396

Standard deviation = √(summation(x - mean)²/n

Standard deviation = √(145.2396

Standard deviation = 12.1

The standard deviation of the sample is not a good estimate of the variation of the salaries of the TV personalities in general because

B. No, because the sample is not representative of the whole population.

3 0
3 years ago
Combine like terms:<br>12x + 3y + 4 - 6y - 9​
dimaraw [331]

Answer:

12x-3y-5

Step-by-step explanation:

3y-6y=-3y

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4 0
3 years ago
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This is hard for me can anyone help me? 9
Kazeer [188]

Answer: -12.8x-20y+8.4

Step-by-step explanation: I multiplied the numbers in parentheses by 4.

5 0
3 years ago
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