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VLD [36.1K]
3 years ago
15

Pls help i will give brainly!!!!!!

Mathematics
1 answer:
jasenka [17]3 years ago
7 0

Answer:

\frac{x^{2} }{10} -\frac{y^{2} }{15} = 1

Step-by-step explanation:

since the foci is (±5,0), the standard form of the hyperbola would be \frac{x^{2} }{a^{2} } -\frac{y^{2} }{b^{2} } = 1

directics = ±a^2/c

±2 = ±a^2/5

a^2 = 10

a^2+b^2=c^2

b^2 = c^2-a^2 =5^2-10 = 15

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3x - 7y = -40 <br><br> 3x - 2y = -4
eimsori [14]

Answer:

What are you solving for?

Step-by-step explanation:

5 0
3 years ago
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A raffle offers one $8000.00 prize, one $4000.00 prize, and five $1600.00 prizes. There are 5000 tickets sold at $5 each. Find t
Harman [31]

Answer:

The expectation is  E(1 )= -\$ 1

Step-by-step explanation:

From the question we are told that  

     The first offer is  x_1 =  \$ 8000

     The second offer is  x_2 =  \$ 4000

      The third offer is  \$ 1600

      The number of tickets is  n  =  5000

      The  price of each ticket is  p= \$ 5

Generally expectation is mathematically represented as

             E(x)=\sum  x *  P(X = x )

     P(X =  x_1  ) =  \frac{1}{5000}    given that they just offer one

    P(X =  x_1  ) = 0.0002    

 Now  

     P(X =  x_2  ) =  \frac{1}{5000}    given that they just offer one

     P(X =  x_2  ) = 0.0002    

 Now  

      P(X =  x_3  ) =  \frac{5}{5000}    given that they offer five

       P(X =  x_3  ) = 0.001

Hence the  expectation is evaluated as

       E(x)=8000 *  0.0002 + 4000 *  0.0002 + 1600 * 0.001

      E(x)=\$ 4

Now given that the price for a ticket is  \$ 5

The actual expectation when price of ticket has been removed is

      E(1 )= 4- 5

      E(1 )= -\$ 1

4 0
3 years ago
Cx=r/d<img src="https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7Bd%7D" id="TexFormula1" title="\frac{r}{d}" alt="\frac{r}{d}" align="abs
antoniya [11.8K]

Answer:

x=\frac{rc}{d}

Step-by-step explanation:

ill take the equation as this

cx=\frac{r}{d}

divide both side by c

\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{\frac{b}{c}}=\frac{a\cdot \:c}{b}

Next time when you see someone greif your question, please report it.

Shame for the other guy

Hoped this helped you

Red

8 0
3 years ago
Dr. Blumen invested $5,000 part of it was invested in bonds at a rate of 6% in the rest was invested in a money market at the ra
abruzzese [7]
So... let's say the amounts invested were "a" at 6% and "b" at 7.5%.

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solve for "a", to see how much was invested at 6%.

what about "b"?  well, b = 5000 - a.
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3 years ago
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alexandr1967 [171]
You would do 9(7) = 63
7 0
3 years ago
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