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2 years ago

Translate the sentence into an equation.

Mathematics

1 answer:

sdas [7]2 years ago

6 0

Answer:

Step-by-step explanation:

4(w +5) =3

→w+5=3/4

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Please help me!<br> Find WX.

Fynjy0 [20]

So WX is 7y +4 and XY is 21, and when you add those lines you get the whole thing, which is 12y so write that like an equation
12y = 7y+4+21
12y = 7y+25
5y = 25
y = 5

3 0

3 years ago

Use the fact that the mean of a geometric distribution is μ= 1 p and the variance is σ2= q p2. A daily number lottery chooses th

butalik [34]

Answer:

a). The mean = 1000

The variance = 999,000

The standard deviation = 999.4999

b). 1000 times , loss

Step-by-step explanation:

The mean of geometric distribution is given as , $\mu = \frac{1}{p}$

And the variance is given by, $\sigma ^2=\frac{q}{p^2}$

Given : $p=\frac{1}{1000}$

= 0.001

The formulae of mean and variance are :

$\mu = \frac{1}{p}$

$\sigma ^2=\frac{q}{p^2}$

$\sigma ^2=\frac{1-p}{p^2}$

a). Mean = $\mu = \frac{1}{p}$

= $\mu = \frac{1}{0.001}$

= 1000

Variance = $\sigma ^2=\frac{1-p}{p^2}$

= $\sigma ^2=\frac{1-0.001}{0.001^2}$

= 999,000

The standard deviation is determined by the root of the variance.

$\sigma = \sqrt{\sigma^2}$

= $\sqrt{999,000}$ = 999.4999

b). We expect to have play lottery 1000 times to win, because the mean in part (a) is 1000.

When we win the profit is 500 - 1 = 499

When we lose, the profit is -1

Expected value of the mean μ is the summation of a product of each of the possibility x with the probability P(x).

$\mu=\Sigma\ x\ P(x)= 499 \times 0.001+(-1) \times (1-0.001)$

= $ 0.50

Since the answer is negative, we are expected to make a loss.

4 0

3 years ago

NO LINKS!!!!! Write 5 summary for the data below. Show your work.

ankoles [38]

Answer:

$lower \: quartile = \frac{1}{4} \times 8 \\ = {2}^{nd} \\ = 3$

$upper \: quatile = \frac{3}{4} \times 8 \\ = 6 {}^{th} \\ = 7$

$median = \frac{1}{2} \times 8 \\ = 4 {}^{th} \\ = 5$

5 0

3 years ago

What is the answer to this: <br> Share 165 by 15

Pepsi [2]

The answer is 11, because 165 divided by 15 is 11 :)

7 0

3 years ago

Read 2 more answers

Write two different word phrases for the expression (52+8) 30

zepelin [54]

Answer:

1. The product of thirty and eight more than fifty-two.

2. Thirty times the sum of eight and fifty-two

Step-by-step explanation:

1) 52+8 (eight more the fifty-two )

52+8 (The product of thirty and eight more than fifty-two.)

2) 52+8 (The sum of eight and fifty-two)

52+8 (Thirty times the sum of eight and fifty-two)

3 0

3 years ago

Read 2 more answers