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Radda [10]
3 years ago
12

What is the standard form of this equation of a circle?

Mathematics
2 answers:
Olenka [21]3 years ago
5 0
<span>x² + y² + 14x − 4y − 28 = 0

x² +14x +y² - 4y =28
x²+2*7x  +7² -7²  + y² - 2*2y +2² - 2² = 28
(x+7)² + (y-2)² -7²-2² =28
</span>(x+7)² + (y-2)²=28+49+4

(x+7)² + (y-2)² =81 is the answer.
Marina CMI [18]3 years ago
5 0

(x2 + 14x + 49) + (y2 − 4y + 4) − 28 = 49 + 4

(x + 7)2 + (y − 2)2 − 28 = 49 + 4

(x + 7)2 + (y − 2)2 = 49 + 4 + 28 = 81.

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Find the least common multiple of 10,15,25 please no links or photo​
sergey [27]

Answer:

150

Step-by-step explanation:

The LCM of 10,15,25 10 , 15 , 25 is 2⋅3⋅5⋅5=150 2 ⋅ 3 ⋅ 5 ⋅ 5 = 150 .

6 0
3 years ago
What’s the first two steps to solve the equation 4 (2x - 3) = 1
Paladinen [302]

Answer:

1. Dividing both sides by 4

2. Adding 3 to each side

Step-by-step explanation:

The first step you want to take is to divide both sides by 4 so that you can solve for inside the parenthesis. Next, you should add three to both sides in order to isolate the variable.

4 0
3 years ago
Please help!
motikmotik

Answer:

A.

Step-by-step explanation:

Step 1: Write equation

x² - 8x = 3

Step 2: Solve for <em>x</em>

  1. Complete the Square: x² - 8x + 16 = 3 + 16
  2. Factor: (x - 4)² = 19
  3. Square root both sides: x - 4 = ±√19
  4. Add 4 to both sides: x = 4 ± √19
5 0
3 years ago
Read 2 more answers
Sam is saving for a guitar. He already has $50 saved and intends to save $30 each week. At week 12, how much money will Sam have
PolarNik [594]

Answer:

$50 + ($30 x 12) = $410

Step-by-step explanation:

8 0
3 years ago
The sum of three numbers is 50. One number is five more than a second number. It is also twice the third. Find the numbers.
Blababa [14]
Let
One Number = x
Second Number =x-10
Third Number=x/2

Sum of three numbers is 50
x+x-10+x/2=50
2x-10+x/2=50
Multiply by 2 both sides
2*(2x-10+x/2)=50*2

4x-20+x=100
5x=100+20
5x=120
x=120/5
x=24

One number = x=24
Second number =x-10=24-10=14
Third number= x/2=24/2= 12
8 0
3 years ago
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