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svetlana [45]
3 years ago
6

Help picture provided

Mathematics
2 answers:
Nana76 [90]3 years ago
6 0
It is between 45-50!!!! I WISH YPI LUCKLK
bogdanovich [222]3 years ago
3 0

Answer:

If I am correct and I understand it its between 40 and 50.

Step-by-step explanation:

Thats because the square is on 40 and ends on 50.

I hope this helped, tell me if something was wrong.

Goodluck!!!!

:D

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You and your sister share a car with your mom. You get to use the car every fourth day. Your sister gets the car every fifth day
nadya68 [22]

Answer:

20th day

Step-by-step explanation:

you: 4,8,12,16,20,24

sister:5,10,15,20,25

20 is the day where they meet

3 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
2 years ago
Round your answer to the nearest percent.
emmainna [20.7K]

Answer:

Step-by-step explanation:

Givens

Number not using given app = 71

Total number of students  = 219

% = ?

Solution

P(~given app) = 71 / 219

P(~given app)  = 0.324

% = 0.324 * 100  = 32.4%

Answer

32.4% do not use Given App

4 0
2 years ago
Help ASAP please!!!!!!!
Bumek [7]
I think the answer will be (-4,3)
4 0
3 years ago
What is the radius of a circle given by the equation x2 + y2 – 2x + 8y – 47= 0? radius = units
il63 [147K]
ANSWER

The radius is 8

EXPLANATION

We were given,

{x}^{2}  +  {y}^{2}  - 2x + 8y - 47 = 0




We rewrite the above equation to obtain,

{x}^{2}  - 2x \:  \:  \:  \:  +  {y}^{2}  + 8y \:  \:  \:  \:  = 47


We now add half the square of the coefficient of
x \: and \: y
to both sides of the equation to get,


{x}^{2}  - 2x  + ( - 1) ^{2}  +  {y}^{2}  + 8y  +  {(4)}^{2} = 47 + ( - 1) ^{2}  +   {4}^{2}



We now got two perfect squares on the left hand side of the equation,


(x - 1)^{2}   +  {(y + 4)}^{2} = 47 + 1 +   16


(x - 1)^{2}   +  {(y + 4)}^{2} =64



(x - 1)^{2}   +  {(y + 4)}^{2}  =  {8}^{2}



By comparing to the general formula of the circle,


{(x - a)}^{2}  +  {(y - b)}^{2}  =  {r}^{2}


We can see that the radius is 8.
4 0
3 years ago
Read 2 more answers
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