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aksik [14]
3 years ago
9

What is the equation of a circle with the same center but a radius that is twice as long ?

Mathematics
1 answer:
yaroslaw [1]3 years ago
5 0
I think it might be πr^2?
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Guys help me this is hard​
Leokris [45]

Answer:

well 126/9=14 but is the other stuff factor families or something? like whats the question asking

Step-by-step explanation:

5 0
3 years ago
5x^2-2x=2<br>help plsmmm​
Yuki888 [10]

Answer:

Presumably you're solving for x here?  Without further information we'll assume that.

With that in mind, x is approximately equal to 0.86 and -0.46

Step-by-step explanation:

Let's start by putting it in the usual ax² + bx + c format.

5x^2- 2x = 2\\5x^2 - 2x - 2 = 0\\

let's solve it.  First we'll multiply both sides by five, making the first term a perfect square:

25x^2 - 10x - 10 = 0\\

Now we'll add 11 to both sides:

25x^2 - 10x + 1 = 11\\

Which makes the left side a perfect square:

(5x - 1)^2 = 11

And now we can solve for x:

(5x - 1)^2 = 11\\\\5x - 1 =  \sqrt{11} \\\\5x = 1 + \sqrt{11}\\\\x = \frac{1 + \sqrt{11}}{5}

Note that there's no apparent way of drawing the ± symbol when editing equations, so take that + sign as actually being ±.

That gives us two answers:

x = \frac{1 + \sqrt{11}}{5}\\\\x \approx \frac{1 + 3.32}5\\\\x \approx \frac{4.32}5\\\\x \approx 0.86             x = \frac{1 - \sqrt{11}}{5}\\\\x \approx \frac{1 - 3.32}5\\\\x \approx \frac{-2.32}5\\\\x \approx -0.46

7 0
2 years ago
Make a table of values, then graph.<br><br> y = 2x + 1
hram777 [196]
I put the answer below in the picture!

7 0
2 years ago
Around which line would the following cross-section need to be revolved to create a sphere?
rjkz [21]

Answer:

it should be y=1

Step-by-step explanation:

I hope this help

4 0
3 years ago
Which certificate does Jenny require?
Airida [17]
Can you give some more details please thank you
7 0
3 years ago
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