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2 years ago

1-1: HOMEWORK

Mathematics

2 answers:

grigory [225]2 years ago

4 0

Answer:

26/33

Step-by-step explanation:

the line on top of the number means they are recurring. since the line is on top of both numbers, both are recurring and the decimal would be .78787878.... etc.

when converting a recurring number into a fraction you use 9 as the denominator, and you add a 9 for every number thats recurring.

in this case it would be 78/99 which simplifies to 26/33

Paraphin [41]2 years ago

3 0

I think its 0.78/1...???

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Masteriza [31]

Answer:

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Step-by-step explanation:

We need to find the find all the points having an x coordinate of 2 whose distance from the point (-2,-4) is 5.

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Standard form of a circle is

$(x-h)^2+(y-k)^2=r^2$

where, (h,k) is center and r is the radius.

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$(x+2)^2+(y+2)^2=25$

Now, put x=2.

$(2+2)^2+(y+2)^2=25$

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$(y+2)^2=25-16$

$(y+2)^2=9$

Taking square root on both sides.

$y+2=\pm\sqrt{9}$

$y+2=\pm3$

$y+2=-3\text{ or }y+2=3$

$y=-5\text{ or }y=1$

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