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andrezito [222]
3 years ago
12

Solve 3x − 2 = 37. please help me

Mathematics
2 answers:
lyudmila [28]3 years ago
8 0

Answer:

x=13

Step-by-step explanation:

1. Isolate the variable

3x - 2 = 37

     +2 = +2

2. Divide the equation by the coefficient

3x = 39

/3    /3

3. Answer

x = 13

Effectus [21]3 years ago
3 0

Answer: Hello mate!

we have the equation 3x - 2 = 37

and we want to solve it for x.

The first step is add 2 in each side of the equality.

3x - 2 + 2 = 37 + 2

3x = 39

now you can divide in both sides by 3.

(3x)/3 = 39/3

x = 39/3 = 13

Then the x that is solution of the given equation is x = 13

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Marizza181 [45]
The answer is D, not B
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Let X be the number of Heads in 10 fair coin tosses. (a) Find the conditional PMF of X, given that the first two tosses both lan
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Answer:

Follows are the solution to the given point:

Step-by-step explanation:

For option A:

In the first point let z be the number of heads which is available on the first two trails of tosses so, the equation is:

P(X=k | z=2 ) = \begin{pmatrix} 10-2\\ k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k}

                         = \begin{pmatrix} 8\\k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k} \ \ \ \ \ \ \ \ \  \ \\\\

                                                                                                       k= 2,3..........10For option B:

P(X=k | X \geq 2 ) =  \sum^{10}_{i=2}  \begin{pmatrix} 10-i\\ k-i\end{pmatrix} (\frac{1}{2})^{k-i} (\frac{1}{2})^{10-k}

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8 0
3 years ago
How do I solve this?
ra1l [238]

Answer:

(-6,1)   (2,7)

Step-by-step explanation:

y =x+5

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Set the two equations equal since y=y

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Subtract x from each side

x-x+5 =  x^2 +5x-x -7

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Subtract 5 from each side

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Now we can factor the right side

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Using the zero product property

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y = x+5           y = x+5

y = -6+5            y = 2+5

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4 0
3 years ago
If C is between A and B, then answer the following if AB=40, AC= 2x+10, CB= 3x-5
Marat540 [252]

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5 0
3 years ago
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