3 years ago

Graph the circle x^2+y^2+2x+4y-44=0

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

6 0

Answer:

See explanation

Step-by-step explanation:

First, convert this to standard form. By completing the square, you can do the following:

$(x^2+2x+1)-1+(y^2+4y+4)-4-44=0$

$(x+1)^2+(y+2)^2=49$

This is a circle with center (-1,-2), and radius 7. It looks like the one I graphed below. Hope this helps!

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The population of a town is 15,000. It decreases at a rate of 8% per year. In about how many years

Paha777 [63]

Answer:

Step-by-step explanation:

If a population is decreasing by 8% we can multiply the population by 92% (1-.08)

which means we have the following equation

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we want to know when the population will be 10,000 so we write

10,000=15,000(.92)ⁿ

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a rule we have is

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compute this and get

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