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3 years ago

What is the difference of (Negative 3.4 x + 4.7) minus (3 + 2.9 x)?

Mathematics

2 answers:

jekas [21]3 years ago

7 0

Answer:

negative 6.3 x + 1.7

Step-by-step explanation:

answer for your question

vlabodo [156]3 years ago

7 0

The answer is D) Negative 6.3x + 1.7

Hope this helps✨❤️

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Let X be a Bernoulli rv with pmf as in Example 3.18. a. Compute E(X2 ). b. Show that V(X) 5 p(1 2 p). c. Compute E(X79).

spayn [35]

The Bernoulli distribution is a distribution whose random variable can only take 0 or 1

The value of E(x2) is p
The value of V(x) is p(1 - p)
The value of E(x79) is p

<h3>How to compute E(x2)</h3>

The distribution is given as:

p(0) = 1 - p

p(1) = p

The expected value of x2, E(x2) is calculated as:

$E(x^2) = \sum x^2 * P(x)$

So, we have:

$E(x^2) = 0^2 * (1- p) + 1^2 * p$

Evaluate the exponents

$E(x^2) = 0 * (1- p) + 1 * p$

Multiply

$E(x^2) = 0 +p$

Add

$E(x^2) = p$

Hence, the value of E(x2) is p

<h3>How to compute V(x)</h3>

This is calculated as:

$V(x) = E(x^2) - (E(x))^2$

Start by calculating E(x) using:

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

So, we have:

$E(x) = 0 * (1- p) + 1 * p$

$E(x) = p$

Recall that:

$V(x) = E(x^2) - (E(x))^2$

So, we have:

$V(x) = p - p^2$

Factor out p

$V(x) = p(1 - p)$

Hence, the value of V(x) is p(1 - p)

<h3>How to compute E(x79)</h3>

The expected value of x79, E(x79) is calculated as:

$E(x^{79}) = \sum x^{79} * P(x)$

So, we have:

$E(x^{79}) = 0^{79} * (1- p) + 1^{79} * p$

Evaluate the exponents

$E(x^{79}) = 0 * (1- p) + 1 * p$

Multiply

$E(x^{79}) = 0 + p$

Add

$E(x^{79}) = p$

Hence, the value of E(x79) is p

Read more about probability distribution at:

brainly.com/question/15246027

5 0

2 years ago

Solve 1/p+1/s=1 for p

jekas [21]

Answer:

Step-by-step explanation:

Multiply through by the L. C. M which is PS.

1/p*ps+1/s*ps=1*ps

P+p=ps

2p=ps

Divide both sides by 2

2p/2=ps/2

P=ps/2

3 0

3 years ago

How do you solve it

Vesna [10]

D is the answer............

8 0

3 years ago

Read 2 more answers

Could somebody please help it's due tomorrow

Alina [70]

Answer:

<u><em>1080</em></u> for the last one

Step-by-step explanation:

<em>12/4=3months 40*3=120</em>

The first one is 3

3 0

2 years ago

Read 2 more answers

What is 6(5x-3) ??? I dont know what it is

aalyn [17]

Answer:

30x - 18

Step-by-step explanation:

6(5x - 3)

<em>Distribute the 6 to both monomials.</em>

6 * 5x = 30x

6 * -3 = -18

<em>Combine both final monomials.</em>

30x - 18

8 0

3 years ago