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3 years ago

99 POINTS BRAINLIEST!! no fake answers please!

Mathematics

2 answers:

Illusion [34]3 years ago

6 0

I think the answer would be -$5.17 because you would have to find the unexpected value.

I think the answer to this picture is 0.122

Oduvanchick [21]3 years ago

6 0

Game:

1/36(94) + 35/36(-8) = 94/36 -280/36 = -186/36 = -5.17

4. Add the probabilities together for 5 and under:

0.122 + 0.061 + 0.022 + 0.006 + 0.001 = 0.212

Airline :

Given: P = 70, P = 97% = 0.97, q = 1-0.97 = 0.03

Probability of being greater than 68:

(70 * 0.97^69 * 0.03^1) + (1*0.97^70*1)

= 0.2567 + 0.1185

= 0.375

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I really need help plz help if you help I will help you to

lidiya [134]

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9. draw two squares and divide them both into 3 sections. In the first square color in one section and in the second square color in two sections.

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3 years ago

Jacob is a plumber. Due to increased material costs, he puts all his prices up by 7%. He now chargers R320 per hour for her serv

Lorico [155]

Answer:

R290.1

Step-by-step explanation:

Let

x = charge before he put his prices up

New charge = R320

Percentage increase in price = 7%

x + 7% of x = 320

x + 0.07 * x = 320

x + 0.07x = 320

1.07x = 320

x = 320/1.07

x = 299.06542056074

Approximately

x = R290.1

Charge before he put his prices up = R290.1

4 0

2 years ago

The owner of a football team claims that the average attendance at games is over 523, and he is therefore justified in moving th

USPshnik [31]

Answer:

C) There is not sufficient evidence to support the claim that the mean attendance is greater than 523.

Step-by-step explanation:

Let μ be the the average attendance at games of the football team

The claim: the average attendance at games is over 523

Null and alternative hypotheses are:

$H_{0}$ : μ=523

$H_{a}$ : μ>523

The conclusion is failure to reject the null hypothesis.

This means that test statistic is lower than critical value. Therefore it is not significant, there is no significant evidence to accept the alternative hypothesis.

That is no significant evidence that the average attendance at games of the football team is greater than 523.

7 0

2 years ago

(02.05 MC) A dance school has 63 ballet dancers. If 42% of the total number of dancers in the school are ballet dancers, what is

Elena L [17]

Alright, lets get started.

Suppose total number of dancers in school = x

We have given in question, 42 % of total dancers are ballet dancers.

So, we could find number of ballet dancers by finding 42 % of total dancers.

Number of ballet dancers = x * 42 %

Number of ballet dancers = x * 42/100 = 0.42 x

As per given in question, there are 63 ballet dancers in school.

Which means 0.42 x = 63

Dividing 0.42 from both sides

0.42 x / 0.42 = 63 / 0.42

x = 150

Hence number of total dancers in school = 150 : Answer

Hope it will help :)

4 0

2 years ago

ABC and ACD are both right angled triangles. a) explain why the length of AC is 13cm.

timofeeve [1]

Answer:

In the picture attached, the question is shown.

a) Applying Pythagorean theorem to triangle ABC, and solving for AC:

CB² + BA² = AC²

5² + 12² = AC²

√169 = AC

13 cm = AC

b) Applying Pythagorean theorem to triangle ACD, and solving for AD:

CD² + AC² = AD²

5² + 13² = AD²

√194 = AD

13.9 cm = AD

Step-by-step explanation:

6 0

1 year ago