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patriot [66]
3 years ago
5

What is the radius of a circle whose equation is x2 + y2 + 8x - 6y + 21 = 0? units

Mathematics
1 answer:
pickupchik [31]3 years ago
6 0

Answer:r=2

Step-by-step explanation:

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100 POINTS+ BRAINLYEST❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️
Karo-lina-s [1.5K]

Step-by-step explanation:

The vertex form of a parabola can be written as

y =  {a(x - h)}^{2}  + k

where (h, k) are the coordinates of the parabola's vertex. The vertices of the functions are as follows:

a) (3, 5)

b) (-7, 3)

c) (4, 0)

d) (0, -1)

e) (-1, -5)

f) (-1, -5)

7 0
3 years ago
Slope of 5,2 and 6,2
maria [59]

Answer:

The slope is 0

Step-by-step explanation:

(2-2) divided by (6-5) equals to 0 which is the Slope

\frac{2-2}{6-2} \\\\

7 0
3 years ago
The sum of the first 12 terms of a geometric sequence with 10 as the first term and a common ratio of 0.3 is __________.
BaLLatris [955]

Answer: 14.2638366937

Step-by-step explanation:

A geometric sequence is a sequence in which each term is multiplied by a number, called the common ratio, to get the next term.

So, if the first term of the geometric sequence is 10 and the common ratio is 0.3, the sequence would be 10, 0.3(10), 0.3 x 0.3 x 10... and so forth. This becomes:

10, 3, 0.9, 0.27, 0.081, 0.00243, 0.00729, 0.002187, 0.0006561, 0.00019683, 0.000059049, 0.0000177147...

You add these first 12 terms to get 14.2638366937.

7 0
3 years ago
Help please I don’t get itttttttt I’ll mark brainlist if I can pleaseee
Marizza181 [45]

Answer:

<u>$5.94 </u>

Step-by-step explanation:

Multiply 2.75 by $0.76 to get $2.09

Multiply 2.75 by $1.40 to get $3.85

Add $3.85 and $2.09 to get $5.94

6 0
3 years ago
If 48% of the students in a certain college are female and there are 1440 female students, what is the total number of students
Andrews [41]

Answer:

3000 students

Step-by-step explanation:

If 48% of the students are female, and there are 1440 female students, we can set up a percentage proportion, assuming x is the total amount of students.

\frac{1440}{x} = \frac{48}{100}

We can use the cross products property to find the value of x.

1440\cdot100=144000\\\\144000\div48=3000

Hope this helped!

5 0
3 years ago
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