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OlgaM077 [116]
3 years ago
10

X = -7y; 2x - 8y = 22​

Mathematics
1 answer:
mina [271]3 years ago
8 0

Answer:

<em><u>(7; -1)</u></em>

Step-by-step explanation:

Hi there!

Here is a solution:

If x=-7y then -14y-8y=22 => y=-1 and x=7

Hope this helps)

Have a nice day!

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I need help urgent plz someone help me solved this problem! Can someone plz help I’m giving you 10 points! I need help plz help
Olegator [25]

Answer:  ln 20 + 5t

<u>Step-by-step explanation:</u>

ln (<em>ab</em>) = ln<em>a</em> + ln<em>b</em>

ln (10e⁵ˣ) = ln 10 + ln e⁵ˣ           → (ln e cancels out)

              = ln 10 + 5t        

3 0
4 years ago
It's an overcast day in Hayward and you're waiting for AC Transit 97 Bus Line to show up. Your weather app says there's a 30% ch
melomori [17]

Answer:

a

 P(r n L) =  0.12  

b

 P(L) = 0.225

c

  P(\= r | L) =  0.4667

Step-by-step explanation:

The chance that it will rain is  P(r ) = 0.30

 The chance that it does not rain is P(\= r ) = 1 - P(r )

                                                             P(\= r ) = 1 -0.30

                                                              P(\= r ) = 0.70

The probability that the bus run late if it rains is  P(L | r) =  0.4

 The probability that the bus run late if it does not rain is   P(L | \= r) =  0.15

  Generally the probability that it will rain and the bus will be late is mathematically represented as

     P(r n L) =  P(L | r) *  P(r)

=>  P(r n L) =  0.4 *  0.30

=>  P(r n L) =  0.12  

Generally the probability that the bus will be late is mathematically represented as

     P(L) =  P(r) * P(L|r) + P(L | \= r) * P(\= r)

=>  P(L) =  0.30 * 0.4 +0.15*0.70

 =>  P(L) = 0.225

Generally given that the bus ran late,  the probability that the bus it was not raining is mathematically represented as

      P(\= r | L) =  1- P(r | L )

Here  P(r | L ) = \frac{P(r n L)}{P(L)}

=>   P(r | L ) = \frac{0.12}{0.225}

=>   P(r | L ) = 0.533

So

      P(\= r | L) =  1- 0.533

   =>   P(\= r | L) =  0.467

3 0
3 years ago
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Nutka1998 [239]

Answer: 2 1/4 hours

Step-by-step explanation:

If Rafael practices 3/4 of an hour each day for three days he will have had 3/4 of an hour practice after day 1, 1 1/2 hours of practice after day 2 and then 2 1/4 hours of practice after day 3.

3 x 3/4 = 9/4

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8 0
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Round 188,206 to the nearest thousand
Vinvika [58]

Answer:

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Step-by-step explanation:

6 0
4 years ago
What is the reason for each step in the solution of the equation -5(x-6)=10x
muminat
Hey!
Hope it helps you

6 0
3 years ago
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