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Gennadij [26K]
3 years ago
7

5. Which equation is of a circle that has a center at

Mathematics
1 answer:
Basile [38]3 years ago
5 0

Answer:

\large\boxed{D.\ (x-3)^2+(y+2)^2=81}

Step-by-step explanation:

The standard form of an equation of a circle:

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

(h, k) - center

r - radius

We have the center at (3, -2) and the radius r = 9. Substitute:

(x-3)^2+(y-(-2))^2=9^2\\\\(x-3)^2+(y+2)^2=81

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-15+3-7 is greater than less than or equal to -9-1+16
lisov135 [29]

Answer:less than

Step-by-step explanation:

-15+3-7=-19

-9-1+16=6

A positive will always be bigger than a negative

5 0
3 years ago
Read 2 more answers
Why would 6% as a fraction be 6/100?
dangina [55]
Well, percent (%) means per hundred, and your number is 6. Therefore, you have 6 per hundred, or 6/100. Also, when you have a percent and want to convert it into a fraction, you must divide the percent by 100, so you could just put the six over 100 since the line between the numerator and denominator basically means division.
3 0
3 years ago
A shop sells packs of black pens, packs of red pens and packs of green pens.
olchik [2.2K]

Answer:

85 pens  

Step-by-step explanation:

The computation of the number of green pens sold is shown below;

As the number of black pens, red pens, and green pans is 3:5:6

And, the ratio of sold of black pens, red pens, and green pans is 7:3:4

So, the ratio of pens in a number of pens is

= 3 × 7 : 5 × 3 : 4 × 6

= 21: 15 : 24

= 7: 5 : 8

And, the total of 212 pens are sold

So, the number of green pens sold is

= 8 × 212 ÷ (7 + 5 + 8)

= 85 pens  

4 0
3 years ago
Suppose you mark n points on a circle, where n is a whole number greater than 1. The number of segments you can draw that connec
leonid [27]
The expression for the number of segments drawn out of the n number of points in the circle is,
                                n² / 2 - n / 2
Substituting directly to the expression the number of points, n, which is equal to 8,
                                8² / 2  - 8 / 2 = 28
Thus, there are 28 segments that can be drawn from the points. 
5 0
3 years ago
Plz help I will mark you brainlist plz ​
amid [387]

Here is all the work and answers for these questions they are all correct i checked them all and ive done this assignmnet before

4 0
3 years ago
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