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scoundrel [369]

3 years ago

7

is a set of numbers a subset of a set of numbers in words ex. A = {one, three} B = {1,2,3,4,5...} A is a subset of B. True or Fa

lse?

1 answer:

anyanavicka [17]3 years ago

8 0

Answer:

true

Step-by-step explanation:

it is because 1 and 3 in set A are in sat B

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5÷5/6= please answer my question

solong [7]

Just like that? Any question, inbox. :p

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3 years ago

Which percent is eguivalent to 2.5?<br><br> 1)2.5%<br> 2)25%<br> 3)250%<br> 4)2,500%

sertanlavr [38]

Answer: 250%

since, 100% = 100/100

250% = 250/100

Step-by-step explanation:

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3 years ago

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Rashawn read 25 pages of his book each day until he finished the book. His book was 400 pages long.

Anna71 [15]

I think it's the second one.

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Libby needs to cut pieces of oak molding that are 3/4 yard long. She has 2 yards of oak molding. How many pieces can she cut? Ho

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3 0

3 years ago

A cell tower is located at and transmits a circular signal that covers three major cities. The three cities are located on the c

Lelu [443]

Answer:

$(x+8)^2 +(y-4)^2 = 25$

Step-by-step explanation:

Assuming this complete problem: "A cell tower is located at (-8, 4) and transmits a circular signal that covers three major cities. The three cities are located on the circle and have the following coordinates: G (-4, 7), H (-13, 4), and I (-8, -1). Find the equation of the circle"

For this case the generla equation for the circle is given by:

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

From the info we know that the tower is located at (-8, 4) so then h = -8 and k = 4, so then we need to find the radius. So we have the equation like this: $(x+8)^2 +(y-4)^2 = r^2$

If the 3 points are on the circle then satisfy the equation. We can use the first point (-4,7) and if we replace we can find the value for $r^2$

$(-4+8)^2 +(7-4)^2 =25= r^2$

So then $r = \sqrt{25}=5$

And if we replace the second point we got this:

$(-13+8)^2 +(4-4)^2 = 25 =r^2$

And for the third point we have:

$(-8+8)^2 +(-1-4)^2 = 25 =r^2$

And we got the same result.

So then our final equation is given:

$(x+8)^2 +(y-4)^2 = 25$

4 0

4 years ago