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svetoff [14.1K]
3 years ago
15

Solve the equation using the method of completing the square. A. B. C. D.

Mathematics
2 answers:
erastovalidia [21]3 years ago
8 0
Where is the equation?
Kitty [74]3 years ago
3 0

Answer:

A

Step-by-step explanation:

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Sara has a circular fence around her dog house. Each day when she comes home from
larisa86 [58]

Answer:

226.2 feet

Step-by-step explanation:

The fence around the dog's house is a circle, with a radius of 12 meters.

To calculate the distance the dog runs, we need to find the circumference of that circle, which is given by the formula:

C = 2 π r, since we know r, the calculation is easy:

C = 2  π 12 = 24 π = 75.4 feet.

The dog makes three laps around the circle before calming down... so he runs 3 times 75.4 feet.

Dogs run = 3 x 75.4 ft = 226.2 feet

8 0
3 years ago
A right triangle must have
goblinko [34]

Answer:

90 degree angle.

Step-by-step explanation:

Right triangles must have a 90 degree angle or it is not a right triangle.

6 0
3 years ago
Samuel has run for 45 minutes. If he has completed 60% of his run, how many minutes will Samuel run in all?
Irina18 [472]

Answer:

27

Step-by-step explanation:

45÷10= 4.5

4.5×6= 27 minutes

6 0
3 years ago
For what value of x would the expression below be undefined? 2x − 15 x + 9
Naddik [55]
Hey there!

I'm assuming your expression is actually \frac{2x - 15}{x + 9}. If it's not, let me know and I'll be happy to help you out further. 

If x were equal to –9, your expression would be undefined. If you solve it with this value plugged in for x, you will get the following: 

\frac{2x - 15}{x + 9}

\frac{2(-9) - 15}{(-9) + 9}

\frac{-18 - 15}{0}

\frac{-33}{0}

error

You can't divide anything by zero. This expression would be undefined if x were –9 since it makes the denominator zero. Therefore, x ≠ –9. 

Hope this helped you out! :-)
7 0
3 years ago
I need to determine if the following equation/función is linear ?
velikii [3]

Answer:

It is a linear equation

Step-by-step explanation:

6 0
3 years ago
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