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3 years ago

What is the center of a circle whose equation is x2 + y2 – 12x – 2y + 12 = 0?

Mathematics

1 answer:

Vadim26 [7]3 years ago

8 0

Answer:

(6,1)

Step-by-step explanation:

Just look for the terms with x and y in them. Divide their coefficients by two, and multiply by -1. And then put them in an ordered pair.

So in this case, -12x --> 6 and -2y --> 1

Obviously the more orthodox way would be to actually complete the square, but I'm lazy, this way is faster, and since this seems to be multiple choice, as long as you have the correct answer, it shouldn't matter.

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) The manager of a local Gap store estimates that on average the probability of a customer entering the store and will purchase

xeze [42]

Answer: 1. 0.0256

2. 0.4096

Step-by-step explanation:

Binomial probability formula , to find the probability of getting x successes:

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where n= Total number of trials

p= Probability of getting success in each trial.

Let x be the number of customers will make purchase.

As per given , we have

p= 0.20

n= 4

1. The probability that 3 of the next 4 customers will make a purchase will be:-

$P(x=3)=^4C_3(0.20)^3(1-0.20)^{4-3}$

$P(x=3)=(4)(0.20)^3(0.80)^{1}\ \ [\because\ ^nC_{n-1}=n]$

$P(x=3)=(4)(0.008)(0.80)=0.0256$

Hence, the probability that 3 of the next 4 customers will make a purchase = 0.0256

2. The probability that none of the next 4 customers will make a purchase will be :

$P(x=0)=^4C_0(0.20)^0(1-0.20)^{4-0}$

$P(x=0)=(1)(0.80)^{4}\ \ [\because\ ^nC_{0}=1]$

$P(x=0)=0.4096$

Hence, the probability that none of the next 4 customers will make a purchase= 0.4096

5 0

3 years ago

Any help will be great!

son4ous [18]

Answer:

180

Step-by-step explanation:

75% times 240 would be 180

6 0

3 years ago

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Ello ... Random Question

BARSIC [14]

Hi i know the answrrrrr

7 0

3 years ago

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Find the value of y so<br> that (-2,y) satisfies y =-7x?

Anit [1.1K]

Answer:

y=14

Step-by-step explanation:

plug in -2 in the place of x

y=-7(-2) y=14

6 0

3 years ago

The mode of the data above is 6

nordsb [41]

I was stuck on the same thing in my class test. I ended up failing but if I get the answers to it I’ll totally send them to you

7 0

3 years ago