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1 year ago

Name strategies that eskom uses to protect the environment

Business

1 answer:

lorasvet [3.4K]1 year ago

7 0

Answer:

Loadshedding

Explanation:

Their machine is not working properly so they have to reduce the load of electricity by switch off every two hours to four hours every town.

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A bag contains 9 red marbles, 5 white marbles, and 6 blue marbles. You draw 4 marbles out at random, without replacement. Find t

IRINA_888 [86]

a) 0.0260

b) 0.0681

Explanation:

The bag contains:

r = 9 (number of red marbles)

w = 5 (number of white marbles)

b = 6 (number of blue marbles)

So, the total number of marbles in the bag at the beginning is:

$n=9+5+6=20$

At the 1st attempt, the probability of choosing a red marble is:

$p(r)=\frac{r}{n}=\frac{9}{20}$ (1)

At the 2nd attempt, the 1st red marble is not placed back, so now the number of marbles is (n-1), while the number of red marbles left is (r-1). So the probability of choosing another red marble at the 2nd attempt is

$p(r)=\frac{r-1}{n-1}=\frac{8}{19}$ (2)

With a similar argument, the probabilities of selecting a red marble in the 3rd and 4th attempt are

$p(r)=\frac{7}{18}$ (3)

$p(r)=\frac{6}{17}$ (4)

Therefore, the probability of drawing 4 red marbles in the first 4 attempts without replacing is:

$p(rrrr)=\frac{9}{20}\frac{8}{19}\frac{7}{18}\frac{6}{17}=\frac{3024}{116280}=0.0260$

At the 1st draw, the probability that the marble is not red is:

$p(r^c)=1-p(r)=1-\frac{9}{20}=\frac{11}{20}$

At the 2nd draw, there are 9 red marbles left and 19 total marble left. So, the probability of NOT drawing a red marble is:

$p(r^c)=1-\frac{9}{19}=\frac{10}{19}$

At the 3rd draw, there are 9 red marbles left and 18 total marbles left. So, the probability of NOT drawing a red marble is:

$p(r^c)=1-\frac{9}{18}=\frac{9}{18}$

Finally, with a similar argument the probability of NOT drawing a red marble at the 4th and last attempt is:

$p(r^c)=\frac{8}{17}$

So, the total probability of drawing 4 non-red marbles in the first 4 attempts is:

$p(r^cr^cr^cr^c)=\frac{11}{20}\frac{10}{19}\frac{9}{18}\frac{8}{17}=\frac{7920}{116,280}=0.0681$

6 0

2 years ago

The following information is available for Kinsner Corporation: Total fixed costs $313,500 Variable costs per unit $99 Selling p

Zanzabum

Answer:

The number of units that must be sold is A. 6,540 units

Explanation:

The number of units must be sold to meet the target profit figure are calculated by using following formula:

The number of units must be sold = (Total fixed cost + Targeted profit) / Contribution margin per unit.

Contribution margin per unit = Sales price per unit – Variable cost per unit = $154 - $99 = $55

The number of units must be sold = ($313,500 + $46,200)/$55 = 6,540 units

7 0

2 years ago

What is the difference between excluded services and services that are not reasonable and necessary?

Kitty [74]

Excluded services are those services which health insurance companies do not pay for. Those services may be needed or necessary but they are not covered by the health insurance plan and the person concerned will have to pay for the service himself. Services that are not reasonable or necessary refer to those services which are not deem necessary in the treatment of a patient.

8 0

2 years ago

The product life cycle does not have a major impact on decision-making.

Dennis_Churaev [7]

Answer: Thats false.

3 0

2 years ago

Which is an example of something that is inelastic?

Inessa [10]

Explanation:

example of something that is inelastic is a type of cancer medication

6 0

2 years ago