3 years ago

Given the equation of the circle x2+6x+y2=7 use completing the square and factoring to write the equation in standard form

1 answer:

8 0

<span>x2+6x+y2=7

We add 9 to each side of the equation
</span>
x2+6x+y2 + 9 =7 <span>+ 9</span>

(x+3)**2 + (y+0)**2 = 16

(x+3)**2 + (y+0)**2 = 4**2 (Standard form)

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4(x-11)^2=25

netineya [11]

Expand the square: 4(x-11)^ =25
4(x-11)(x-11)=25

Distribute : 4(x-11)(x-11)=25
4(x(x-11)-11(x-11))=25

Distribute: 4(x(x-11)-11(x-11))=25
4(x^-11x-11(x-11))=25

Solution: x=17/2
x=27/2

hope that helps

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3 years ago

What is the frequency of a wave that has a wave speed of 30 m/s and a wavelength of 0.60 m?

maksim [4K]

Answer:

wave length = 30/6 = 5m

Step-by-step explanation:

wave travels 30m in one second.

wave completes 6 cycles in one second.

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3 years ago

Read 2 more answers

Sam wants to leave an 18% tip for his dinner. The bill is for $23.50. Which equation could be used to find the total amount that

lora16 [44]

Answer:

(0.18 x 23.50) + 23.50

Step-by-step explanation:

First, find the percentage of 23.50 (equation in the parenthesis). 18% is equivalent to 0.18. Then, you add that to 23.50. That's the total amount Sam should pay. I hope this makes sense.

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2 years ago

You are shopping for bicycles. You have saved $97 and you can save an extra $20 per week. How

UNO [17]

Answer:

multiple choice?

Step-by-step explanation:

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3 years ago

Round each number to the nearest thousand and add 29,847+31,866+49,230

lbvjy [14]

111,000 because you do 30000+32000+49000.

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3 years ago