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Makovka662 [10]
3 years ago
14

I will give brainiest to whoever answers my questions !!!

Mathematics
1 answer:
Setler79 [48]3 years ago
7 0

Answer:

is that true or not if yes i will answer it

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Which is the equation of a hyperbola centered at the origin with x-intercept +\- 3 and asymptote y=2x
Radda [10]

Answer:

{\dfrac{x^{2}}{9} - \dfrac{y^{2}}{36} = 1}

Step-by-step explanation:

The hyperbola has x-intercepts, so it has a horizontal transverse axis.

The standard form of the equation of a hyperbola with a horizontal transverse axis is  \dfrac{(x - h)^{2}}{a^{2}} - \dfrac{(y - k)^{2}}{b^{2}} = 1

The center is at (h,k).

The distance between the vertices is 2a.

The equations of the asymptotes arey = k \pm \dfrac{b}{a}(x - h)

1. Calculate h and k. The hyperbola is symmetric about the origin, so  

h = 0 and k = 0

2. For 'a': 2a = x₂ - x₁ = 3 - (-3) = 3 + 3 = 6

a = 6/2 = 3  

3. For 'b': The equation for the asymptote with the positive slope is  

y = k + \dfrac{b}{a}(x - h) = \dfrac{b}{a}x

Thus,  asymptote has the slope of

\begin{array}{rcl}m& =& \dfrac{b}{a}\\\\2& =& \dfrac{b}{3}\\\\b& =& \mathbf{6}\end{array}

4.  The equation of the hyperbola is

\large \boxed{\mathbf{\dfrac{x^{2}}{9} - \dfrac{y^{2}}{36} = 1}}

The attachment below represents your hyperbola with x-intercepts at ±3 and asymptotes with slope ±2.

7 0
3 years ago
A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 46.0 and 56.
barxatty [35]

Answer: 0.05

Step-by-step explanation:

Given : Interval for uniform distribution : [46.0 minutes, 56.0 minutes]

The probability density function will be :-

f(x)=\dfrac{1}{56-46}=\dfrac{1}{10}=0.1\ \ , 46

The probability that a given class period runs between 50.75 and 51.25 minutes is given by :-

P(50.75

Hence, the probability that a given class period runs between 50.75 and 51.25 minutes = 0.05

7 0
3 years ago
Find the domain and range
Savatey [412]

Answer:

what range

Step-by-step explanation:

range of

ano pong range

7 0
3 years ago
I need help on this slope interception
Minchanka [31]

Answer:

Step-by-step explanation:

           0           -3               y intercept is -3 when x is 0

            x           y

    -1     1              0   -3      subtract 1 for x   and  3 for y

          2             3

          3             6

          4             9

x only increase by ones        y increases by threes

so the slope is   y/x   which means     3/1    up three, 1 to the right

y=mx+b

y = 3x-3

8 0
3 years ago
A motorboat takes 3 hours to travel 108 kilometers going upstream. The return trip takes 2 hours going
IRISSAK [1]

Answer:

  • 45 km/h and 9 km/h

Step-by-step explanation:

Let the rate of boat in still water be b and the speed of the current be c

  • Speed downstream = b + c
  • Speed upstream = b - c

<u>We got equations for time:</u>

  • 108/(b - c) = 3 ⇒ b - c = 36
  • 108/(b + c) = 2 ⇒ b + c = 54

<u>Add up the equations:</u>

  • b - c + b + c = 36 + 54
  • 2b = 90
  • b = 45 km/h

<u>Then finding the values of c</u>

  • c = 45 - 36 = 9 km/h
6 0
3 years ago
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