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PtichkaEL [24]
3 years ago
9

5c+16.5=13.5+10c PLease answer quicly

Mathematics
2 answers:
frosja888 [35]3 years ago
4 0
Remember you can do anything to an equation as long as you do it to both sides

5c+16.5=13.5+10c
minus 5c both sides
16.5=13.5+5c
minus 13.5 from both sides
3=5c
divide both sides by 5
3/5=c
OverLord2011 [107]3 years ago
4 0
<span> 5c + 16.5 = 13.5 + 10c
 
16.5 + 5c = 13.5 + 10c

 16.5 + 5c = 13.5 + 10c
 
16.5 + 5c + -10c = 13.5 + 10c + -10c
 
 5c + -10c = -5c 16.5 + -5c = 13.5 + 10c + -10c

10c + -10c = 0 16.5 + -5c = 13.5 + 0 16.5 + -5c = 13.5
 
 16.5 + -16.5 + -5c = 13.5 + -16.5

:16.5 + -16.5 = 0.0 0.0 + -5c = 13.5 + -16.5 -5c = 13.5 + -16.5
 
13.5 + -16.5 = -3 -5c = -3
 
Divide each side by '-5'.
 
c = 0.6 or 3/5</span>
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Answer:

r = \sqrt{11}

Step-by-step explanation:

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So first we can complete the square for x² + 2x

To do so we need to use (\frac{b}{2} )^{2} to figure out the number we need to add to both sides

In this case our b is 2, so substituting this in we get (\frac{2}{2} )^{2} =(1)^{2} =1

Here we add 1 to both sides and now we have x² + 2x + 1 + y² + 4y = 6 + 1

Now we can follow the same steps to complete the square for y² + 4y

Here our b is 4, so substituting this in we get (\frac{4}{2} )^{2}=(2)^{2} =4

Now we add 4 to both sides and now we have x² + 2x + 1 + y² + 4y + 4 = 6 + 1 + 4

Now condensing everything we have (x + 1)² + (y + 2)² = 11

The formula for a circle is (x - h)² + (y - k)² = r²

In our equation we have r² = 11

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5 0
2 years ago
Find the area of the shaded region.
Ghella [55]
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3 years ago
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2 years ago
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7

Step-by-step explanation:

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