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antoniya [11.8K]
3 years ago
14

The perimeter of a rectangle is 24 centimeters. It's length is 9 centimeters. find the width

Mathematics
2 answers:
Norma-Jean [14]3 years ago
7 0
9+9 is 18 24-18 is 6 6 divided by 2 is 3 so the width is 3 centimeters
Natali5045456 [20]3 years ago
7 0
It is 15 because you subtract 24 with 9 and that gets you 15 and me as a brainilist plz
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Please help & thank you.
MA_775_DIABLO [31]

Answer:

<em>9</em>

Step-by-step explanation:

2(5y°) = 90° ⇒ y = <em>9</em>

3 0
2 years ago
A person purchased a slot machine and tested it by playing it 1,137 times. There are 10 different categories of outcomes, includ
ivann1987 [24]

Answer:

p_v= P(\chi^2_{9}>11.517)=0.2419

And on this case if we see the significance level given \alpha=0.1 we see that p_v>alpha so we fail to reject the null hypothesis that the observed outcomes agree with the expected frequencies at 10% of significance.

Step-by-step explanation:

A chi-square goodness of fit test determines if a sample data obtained fit to a specified population.

p_v represent the p value for the test

O= obserbed values

E= expected values

The system of hypothesis for this case are:

Null hypothesis: O_i = E_i[/tex[Alternative hypothesis: [tex]O_i \neq E_i

The statistic to check the hypothesis is given by:

\chi^2 =\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

On this case after calculate the statistic they got: \chi^2 = 11.517

And in order to calculate the p value we need to find first the degrees of freedom given by:

df=n-1=10-1=9, where k represent the number of levels (on this cas we have 10 categories)

And in order to calculate the p value we need to calculate the following probability:

p_v= P(\chi^2_{9}>11.517)=0.2419

And on this case if we see the significance level given \alpha=0.1 we see that p_v>alpha so we fail to reject the null hypothesis that the observed outcomes agree with the expected frequencies at 10% of significance.

6 0
3 years ago
I will give Brainliest!!!
mixer [17]

Answer: C

Step-by-step explanation:

x = 2\sqrt{y+2} - 6

x + 6 = 2\sqrt{y+2}

((x+6)/2 = \sqrt{y+2} )^2

(x+6/2)^2 = y+2

y = (x+6/2)^2 -2

y= 1/4x^2 +3x +7

3 0
2 years ago
What is the value of the function at x = –2?<br><br> Y= -4<br><br> Y= 0<br><br> Y=2 <br><br> Y=3
meriva

Answer:

Y=3

Step-by-step explanation:

You go over to the X axis, find -2 and go up the line vertically until you touch the black line going across. You look to the right and see it says 3. So 3 is your answer

5 0
2 years ago
Sally has 16 marbles in her collection. John has only 7 marbles. Sally gives John 8 of her marbles. How much marbles does John h
Sati [7]

Answer:

The answer is 15

Step-by-step explanation:

hope this helps

5 0
3 years ago
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