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3 years ago

How do I solve this equation?

Mathematics

2 answers:

xxMikexx [17]3 years ago

8 0

Answer:

Step-by-step explanation:

1. Set 3x + 20 and 5x - 50 equal to each other

3x + 20 = 5x - 50

3x = 5x - 70

-2x = -70

x = 34

2. Once you've solved for x plug that in to 3x + 20 or 5x + 50

3(35)+ 20

105 + 20

125

3. After plugging in the x take that answer and subtract from 180 which will give you y

180 - 125 = y

55 = y

Valentin [98]3 years ago

7 0

Answer

you can solve this equation by finding the value of x and y. here, the answer is x=35and y=55.

Step-by-step explanation:

here, we have,

i)3x+20=5x-50[being vertically opposite angle]

20+50=5x-3x

70=2x

70/2=x

thus,x=35.

ii) 3x+20+y=180[being straight angle]

3×35+20+y=180

125+y=180

y=180-125

thus, y=55

<h2>hence, the value of x and y is 35 and 55.</h2>

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2. Find the area of a circle with a diameter of 10 feet.

Paha777 [63]

Step-by-step explanation:

d=2r

πr^2

10/2=r

5=r

5^2π

25π=78.5398

Hope that helps :)

8 0

3 years ago

Read 2 more answers

The following six independent length measurements were made (in feet) for a line: 736.352, 736.363, 736.375, 736.324, 736.358, a

horrorfan [7]

Answer:

Assuming population data

$\sigma = \sqrt{0.000354}=0.0188$

Assuming sample data

$s = \sqrt{0.000425}=0.0206$

Step-by-step explanation:

For this case we have the following data given:

736.352, 736.363, 736.375, 736.324, 736.358, and 736.383.

The first step in order to calculate the standard deviation is calculate the mean.

Assuming population data

$\mu = \frac{\sum_{i=1}^6 X_i}{6}$

The value for the mean would be:

$\mu = \frac{736.352+736.363+736.375+736.324+736.358+736.383}{6}=736.359$

And the population variance would be given by:

$\sigma^2 = \frac{\sum_{i=1}^6 (x_i-\bar x)}{6}$

And we got $\sigma^2 =0.000354$

And the deviation would be just the square root of the variance:

$\sigma = \sqrt{0.000354}=0.0188$

Assuming sample data

$\bar X = \frac{\sum_{i=1}^6 X_i}{6}$

The value for the mean would be:

$\bar X = \frac{736.352+736.363+736.375+736.324+736.358+736.383}{6}=736.359$

And the population variance would be given by:

$s^2 = \frac{\sum_{i=1}^6 (x_i-\bar x)}{6-1}$

And we got $s^2 =0.000425$

And the deviation would be just the square root of the variance:

$s = \sqrt{0.000425}=0.0206$

6 0

3 years ago

The lengths of the sides of a quadrilateral are consecutive even integers. twice the length of the shortest side plus the length

spayn [35]

To solve this problem you must apply the proccedure shown below:

1. You have the following information given in the problem above: twice the length of the shortest side plus the length of the longest side is 248 inches.

2. Therefore, keeping on mind the information above, you have:

x: the shortest side
x+6: the longest side

2x+(x+6)=248
3x+6=248
3x=242
x=242/3
x=80.66 (The shortest side)

x+6=80.66+6=86.66 (The longest side)

The answer is: 86.66

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4 years ago

Emisha earned $30 for 3 1/3 hours of work. How much does she get paid per hour?

Oksana_A [137]

Answer:

$9 Per Hour

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3 years ago

Solve the equation. 2(x + 4) = x + 13 A. −3 B. −1 C. 5 D. 7

Nutka1998 [239]

2x + 8 = x + 13
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