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ololo11 [35]
3 years ago
6

Find the distance between the two points (-2, -6) (3, 9)

Mathematics
1 answer:
sesenic [268]3 years ago
6 0

<em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>:</em><em>)</em>

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Hi, can someone please help, and possibly explain the answer please.
mr_godi [17]

Answer:

x=\frac{-(-2)\±\sqrt{(-2)^2-4(3)(0)} }{2(3)}

Step-by-step explanation:

Quadratic formula: x=\frac{-b\±\sqrt{b^2-4ac} }{2a} when the equation is 0=ax^2+bx+c

The given equation is 1=-2x+3x^2+1. Let's first arrange this so its format looks like y=ax^2+bx+c:

1=-2x+3x^2+1

1=3x^2-2x+1

Subtract 1 from both sides of the equation

1-1=3x^2-2x+1-1\\0=3x^2-2x+0

Now, we can easily identify 3 as a, -2 as b and 0 as c. Plug these into the quadratic formula:

x=\frac{-b\±\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-2)\±\sqrt{(-2)^2-4(3)(0)} }{2(3)}

I hope this helps!  

8 0
3 years ago
What are the solutions to the quadratic equation (5y + 6)2 = 24?
Ivenika [448]

Answer:

y = \frac{2\sqrt{6} }{5} -\frac{6}{5}  OR  y = \frac{-2\sqrt{6} }{5} -\frac{6}{5}

Step-by-step explanation:

Our quadratic equation is: (5y + 6)² = 24.

The first step is to square root both sides:

5y + 6 = ±√24 = ±2√6

Now subtract 6 from both sides:

5y = ±2√6 - 6

Finally divide by 5 from both sides:

y = \frac{2\sqrt{6} }{5} -\frac{6}{5}  OR  y = \frac{-2\sqrt{6} }{5} -\frac{6}{5}

And, those are the solutions to the equation.

7 0
3 years ago
Read 2 more answers
What are the coordinates of this and radius!
LiRa [457]

-1,1 I already told u, nut

3 0
3 years ago
I need help please ?!!!!
Alecsey [184]

Answer:

89

Step-by-step explanation:

= √ 64 +9²

=8 +81

=89

7 0
3 years ago
Read 2 more answers
How many times longer does it take light from the Sun to reach Neptune than Mercury? Express this number in standard notation. E
stealth61 [152]

9514 1404 393

Answer:

  77.6

Step-by-step explanation:

The ratio of light times will be the ratio of distances:

  (light time to Neptune) / (light time to Mercury)

     = (Neptune distance)/(Mercury distance)

     = (27.93×10^8 mi)/(0.3598×10^8 mi) = 27.93/0.3598

     ≈ 77.6

It takes about 77.6 times as long for light to reach Neptune as it does to reach Mercury.

5 0
3 years ago
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