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4 years ago

Please help!! I need to know how to solve this.

Mathematics

1 answer:

AnnyKZ [126]4 years ago

4 0

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation 3/r-(5/r+3)=0
5 Simplify — r 3 5 — - (— + 3) = 0 r r , for short the answer = -2/3 = -0.667

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Please solve the following question.

Degger [83]

The dot plot that corresponds to the given data is the second dot plot

The frequency and the percent frequency distribution are shown below

<h3>Frequency distribution</h3>

The given data is

5.6 9.9 11.3 7.5 10.0 11.9 13.2 13.8 10.0 11.9

6.5 9.0 11.2 10.9 14.6 7.2 10.0 6.0 15.8 11.3

From the question, we are to construct a dot plot

Among the given options, the dot plot that corresponds to the given data is the second dot plot

b) We are to construct a frequency distribution

The frequency distribution table is shown below

Class Frequency

6.0 - 7.9 4

8.0 - 9.9 2

10.0 - 11.9 9

12.0 - 13.9 2

14.0 - 15.9 2

Total 19

b) We are to construct a percent frequency distribution

The percent frequency distribution table is shown below

Class Percent Frequency

6.0 - 7.9 21.1%

8.0 - 9.9 10.5%

10.0 - 11.9 47.4%

12.0 - 13.9 10.5%

14.0 - 15.9 10.5%

Total 100%

The frequency and the percent frequency distribution are shown above

Learn more on Frequency distribution here: brainly.com/question/1094036

#SPJ1

5 0

2 years ago

In this picture, m∠AOC = 65° and m∠COD = (2x + 4)°. If ∠AOC and ∠COD are complementary angles, then what is the value of x?

dmitriy555 [2]

Answer:

I think it's C hope it helps you

4 0

3 years ago

Write in standard form an equation for the line with slope 1/3 through<br> the point (2,-2).

Alexxandr [17]

Answer:

x - 3y = 8.

Step-by-step explanation:

Use the point-slope form of the equation of a line:

y - y1 = m(x - x1) where m = the slope and (x1, y1) is a point on the line.

So substituting the given values:

y - (-2) = 1/3(x - 2)

y + 2 = 1/3x - 2/3 Multiply through by 3:

3y + 6 = x - 2

x - 3y = 6 + 2

x - 3y = 8 <---- Standard Form.

6 0

3 years ago

The coordinates of the vertices of a rectangle are (−3, 4) , (7, 2) , (6, −3) , and (−4, −1) . What is the perimeter of the rect

ki77a [65]

Answrer

Find out the what is the perimeter of the rectangle .

To prove

Now as shown in the figure.

Name the coordinates as.

A(−3, 4) ,B (7, 2) , C(6, −3) , and D(−4, −1) .

In rectangle opposite sides are equal.

Thus

AB = DC

AD = BC

Formula

$Disatnce\ formula = \sqrt{(x_{2} - x_{1})^{2} +(y_{2} - y_{1})^{2}}$

Now the points A(−3, 4) and B(7, 2)

$AB = \sqrt{(7- (-3))^{2} +(2- 4)^{2}}$

$AB = \sqrt{(10)^{2} +(-2)^{2}}$

$AB = \sqrt{100+4}$

$AB = \sqrt{104}$

$AB = 2\sqrt{26}\units$

Thus

$CD= 2\sqrt{26}\units$

Now the points

A (−3, 4) , D (−4, −1)

$AD = \sqrt{(-4 - (-3))^{2} +(-1- 4)^{2}}$

$AD = \sqrt{(-1)^{2} +(-5)^{2}}$

$AD = \sqrt{1 + 25}$

$AD = \sqrt{26}\units$

Thus

$BC = \sqrt{26}\units$

Formula

Perimeter of rectangle = 2 (Length + Breadth)

Here

$Length = 2\sqrt{26}\ units$

$Breadth = \sqrt{26}\ units$

$Perimeter\ of\ rectangle = 2(2\sqrt{26} +\sqrt{26})$

$Perimeter\ of\ rectangle = 2(3\sqrt{26})$

$Perimeter\ of\ rectangle = 6\sqrt{26}$

$\sqrt{26} = 5.1 (Approx)$

$Perimeter\ of\ rectangle = 6\times 5.1$

Perimeter of a rectangle = 30.6 units.

Therefore the perimeter of a rectangle is 30.6 units.

8 0

3 years ago

Please help solve this

KIM [24]

Answer:

49/54

Step-by-step explanation:

3 0

3 years ago