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sattari [20]
2 years ago
7

What is the answer and how do you do this problem?

Mathematics
1 answer:
nadezda [96]2 years ago
7 0

We want to recast the equation into the standard form equation for a circle centered at (h, k) with radius r. That equation is

... (x -h)² + (y -k)² = r²

Start by completing the square for both x-terms and y-terms.

... x² - 4x + y² + 4y = k

To do that, add the squares of half the coefficients of the x- and y-terms.

... x² - 4x + (-2)² + y² + 4y + 2² = k + (-2)² + 2²

... (x -2)² + (y +2)² = k + 8 = r² . . . . . this is now equal to the square of the radius, so we have

... k + 8 = 6² = 36

Subtracting 8 gives

... k = 28 . . . . . . . matches selection D)

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At the ice cream parlor there are thirty flavors, but for the last week they have only had 25 flavors.
myrzilka [38]

Answer: Percent change = 20%

===========================================================

Work Shown:

A = old value = 25 (last week's number)

B = new value = 30 (current week's number)

C = percent change

C = [ (B-A)/A ] * 100%

C = [ (30-25)/25 ] * 100%

C = [ 5/25 ] * 100%

C = 0.20* 100%

C = 20%

The percent change is 20%

The positive value of C indicates we have a percent increase.

8 0
3 years ago
Which number rounds to 15,700,000 when rounded to the nearest hundred thousand?. A) 15,000,000. B) 15,579,999. C) 15,649,999. D)
Artyom0805 [142]
<span>The correct answer is option D. i.e. 15,659,999. Now, this number is closest to the given number i.e. 15,700,000. Becuase when 659 is rounded to the nearest number of hiher value then its value will be 700. Thus,15,659, 999 rounds to 15,700,000 when rounded to the nearest hundred thousand.</span>
6 0
3 years ago
A class is made up of 8 boys and 4 girls. Half of the girls wear glasses. A student is selected at random from the class. What i
Ierofanga [76]

Answer:

1/6

Step-by-step explanation:

The total amount of people 8+4=12

there are 4/2=2 girls with glasses

the probability to chhose a girl with glasses is 2/12=1/6

3 0
2 years ago
8x42+3x59-62=n. What does "n" equal?
vitfil [10]
Answer: n=451 8*42+3*59-62=n 336+177-62=n 451=n n=451
6 0
3 years ago
Triangles ADE and ABC are similar. What is the value of
musickatia [10]

Answer:

x=4

Step-by-step explanation:

in image 1 /2

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4 0
2 years ago
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