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Lubov Fominskaja [6]

4 years ago

6

A meal for 6 costs £12 per person. As it is one of the diners birthday, the other 5 decided to pay for his meal. How much do eac

h of the 5 friends need to pay?

2 answers:

klemol [59]4 years ago

7 0

Answer:

£2.4

Step-by-step explanation:

12 ÷ 5 = 2.4

Sergio [31]4 years ago

3 0

Answer: £2.4

Reason: 12 Divided by 5 = 2.4

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3x+2y=-4<br><br>I need help solving this. Pease help

marta [7]

Steps to solve:
3x+2y=-4
3x=-4-2y
x=- \frac{4}{3}- \frac{2}{3}y [/tex]

6 0

4 years ago

P1. if your school makes $0.72 profit on every 6 raffle tickets sold, how much will it make when it sells the 11th ticket

Ahat [919]

Answer:

Part 1 = $1.32

Step-by-step explanation:

.72 divided by 6 is 12. So they make 12 cents per ticket, so that means you would have to do 12 times 11 and that should get you 132 cents and that is equivalent to $1.32.

4 0

3 years ago

Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. A study wa

4vir4ik [10]

Using the z-distribution, it is found that since the <u>test statistic is greater than the critical value</u>, it can be concluded that the mean length of jail time has increased.

At the null hypothesis, it is <u>tested if the mean length of jail time is still of 2.5 years</u>, that is:

$H_0: \mu = 2.5$

At the alternative hypothesis, it is <u>tested if it has increased</u>, that is:

$H_1: \mu > 2.5$

We have the <u>standard deviation for the population</u>, thus, the z-distribution is used. The test statistic is given by:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.
$\mu$ is the value tested at the null hypothesis.
$\sigma$ is the standard deviation of the sample.
n is the sample size.

For this problem, the values of the <u>parameters</u> are: $\overline{x} = 3, \mu = 2.5, \sigma = 1.5, n = 26$

Hence, the value of the <u>test statistic</u> is:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{3 - 2.5}{\frac{1.5}{\sqrt{26}}}$

$z = 1.7$

The critical value for a <u>right-tailed test</u>, as we are testing if the mean is greater than a value, with a <u>significance level of 0.05</u>, is of $z^{\ast} = 1.645$

Since the <u>test statistic is greater than the critical value</u>, it can be concluded that the mean length of jail time has increased.

A similar problem is given at brainly.com/question/24166849

5 0

3 years ago

Which of the following are factors of 12?<br><br> 1 And 12<br><br> 2 And 6<br><br> 3 And 4

Phoenix [80]

Answer:

id just learned this a month ago so i think its 2 and 6 i hope u get 100!

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the volume of a sphere with a radius of 20 m? 10,666.67π m3 6,000π m3 85,333.33π m3 533.33π m3

Tasya [4]

Answer:10,666,66 $\pi$ m^3

Step-by-step explanation:

V= $\frac{4}{3} \pi r^{3}$

$\frac{4}{3} \pi 20^{3} \\ V=10,666.66 \pi$

4 0

3 years ago