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alexandr1967 [171]
3 years ago
7

Which ordered pair is a solution to the system of equations x+y=12 and x-y=6

Mathematics
1 answer:
const2013 [10]3 years ago
8 0
Plug in the options for x and y
9+3=12, 9-3=6
(9,3)
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A hotel wants to put a fence around a circular spa. The radius of the spa is feet. If the fence is built along the immediate edg
MariettaO [177]

For this case we must find the perimeter of the fence, in a circular way, knowing that the perimeter of a circle is given by:

P = 2 \pi*r

Where "r" represents the radius of the circle, in this case r = \frac {5} {\sqrt {2} -1}

Substituting in the perimeter equation we have:

P = 2 \pi * \frac {5} {\sqrt {2} -1}

Rationalizing we have:

P = \frac {2 \pi * 5 (\sqrt {2} +1)} {(\sqrt {2} -1) * (\sqrt {2} +1)}\\P = \frac {2 \pi*5 \sqrt {2} +2 \pi*5} {2-1}\\P = 10 \pi \sqrt {2} +10 \pi

Taking out common factor \pi:

P = (10 \sqrt {2} +10) \pi

Answer:

P = (10 \sqrt {2} +10) \pi\ feet

Option C


3 0
3 years ago
What is y=2x-1 and y-2x=3. The x and y in both equations have to be the same. Thanks.
Hitman42 [59]
2x-1 = 2x+3
2x = 2x+4
0=4
there is no solution

The reason for this is the equations have the same slope and they have different y-intercepts. this means that they are parallel and will never touch.
3 0
3 years ago
More question so i dont get banned lol <br><br><br><br> memes
xz_007 [3.2K]

Answer:

can i have brainliest please :)

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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Umnica [9.8K]

Answer:

846.95

Step-by-step explanation:

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3 years ago
You select a card at random from the cards that make up the word "replacement". Without replacing the card, you choose a second
lutik1710 [3]

Answer:

The probability is 14/55

Step-by-step explanation:

The word replacement contains 11 letters.

In which 4 letters are vowel = e,a,e,e

And 7 letters are not vowel = r,p,l,c,m,n,t

The probability of getting the vowel in the first try = 4/11

The probability of getting something that is not a vowel = 7/10.

The denominator is one less because the vowel card is not replaced, meaning there is one less card to choose from.

Multiply the values:

=4/11 * 7/10

=28/110

=14/55

The probability is 14/55....

5 0
3 years ago
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