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zimovet [89]
3 years ago
7

What is the center of the circle represented by this equation? (x – 7)2 + (y + 4)2 = 9

Mathematics
1 answer:
lesya692 [45]3 years ago
4 0

Answer:

The center is (7,-4) and the radius is 3

Step-by-step explanation:

(x – 7)^2 + (y + 4)^2 = 9

The equation of a circle can be written as

(x – h)^2 + (y - k)^2 = r^2

where (h,k) is the center and r is the radius

Rewriting the original equation

(x – 7)^2 + (y -  - 4)^2 = 3^2

The center is (7,-4) and the radius is 3

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What is 6 divided by 7/9
Hunter-Best [27]

Answer:

54/7

Step-by-step explanation:

  1. Use the KCF method - Keep, Change, Flip
  2. 6 divided by 7/9 is just 6/1 divided by 7/9
  3. You can keep 6/1 as the way it is
  4. Next, you change the sign from division to multiplication
  5. Lastly, you flip 7/9 to 9/7
  6. It will now change from 6 divided by 7/9 to 6/1 x 9/7
  7. You now multiple 9 x 6 which is 54 and divide by 7
  8. You cannot simplify further so the answer is 54/7

PLEASE PICK ME AS THE BRAINLIEST

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3 years ago
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Sixty percent of vacationers enjoy water parks. Use technology to generate 20 samples of size 100. How closely do the samples es
alexandr1967 [171]

Answer:

I don't understand

Step-by-step explanation:

3 0
3 years ago
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Can someone help me please? Am I right or no?
Juliette [100K]
The figure consists of three objects, a rectangle, a trapezoid, a triangle

Find the area of the rectangle
The rectangle is 16 in long and 9 in wide
a₁ = l × w
a₁ = 16 × 9
a₁ = 144 in²

Find the area of the trapezoid
The base of trapezoid is 31 in and 16 in, and the height is 35 - 20 = 15 in.
a₂ = 1/2 × (a + b) × h
a₂ = 1/2 × (31 + 16) × 15
a₂ = 1/2 × 47 × 15
a₂ = 352.5 in²

Find the area of the triangle
The base of the triangle is 31 in, the height is 20 in
a₃ = 1/2 × b × h
a₃ = 1/2 × 31 × 20
a₃ = 310 in²

Add the area together
a = a₁ + a₂ + a₃
a = 144 + 352.5 + 310
a = 806.5

The answer is 806.5 in²
4 0
3 years ago
Find the length of the missing
Ivahew [28]

Answer:

12

Step-by-step explanation:

using pythagoras theorem

here 15 is hypotenuse since it is opposite 0f 90 degree

9 and x are the other smaller sides of a triangle

according to pythagoras thorem the sum of square of two smaller sides of a triangle is equal to the square of hypotenuse. So,

9^2 + x^2 = 15^2

81 + x^2 = 225

x^2 = 225 - 81

x^2 = 144

x = \sqrt{144

x = 12

5 0
3 years ago
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Solve -12>3x then graph on a number line that you create and please please show all of your work step by step.
V125BC [204]
The work has one step: divide the expression by 3.
.. -4 > x

Because the symbol is "greater than", the circle at x=-4 is an open circle.

5 0
4 years ago
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