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Sveta_85 [38]
2 years ago
8

I need help ASAP pleaseeeeeee!

Mathematics
1 answer:
sveticcg [70]2 years ago
4 0

Hi!

The answer is one

When you solve this system of equations you get an answer for y and an answer for x.

It looks kinda like this: x=3, y=-4

Thus, your answer is one solution

I hope this helps!

Feel free to give brainliest if you think I deserve it!

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What is .336 written as a fraction?
marta [7]
The solution to the problem is as follows:

<span>Write the decimal number as a fraction (over 1)

0.336 = 0.336 / 1
 
Multiplying by 1 to eliminate 3 decimal places
 
we multiply top and bottom by 3 10's
 
Numerator (N) N = 0.336 × 10 × 10 × 10 = 336

Denominator (D) D = 1 × 10 × 10 × 10 = 1000 N / D = 336 / 1000
 
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2(3 times 3+4 times 4)
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3 years ago
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.In the Star Wars franchise, Yoda stands at only 66 centimeters tall. Suppose you want to see whether or not hobbits from the Lo
r-ruslan [8.4K]

Answer:

We conclude that the average height of hobbit is taller than Yoda.

Step-by-step explanation:

We are given that in the Star Wars franchise, Yoda stands at only 66 centimetres tall.

From a sample of 7 hobbits, you find their mean height \bar X = 80 cm with standard deviation s = 10.8 cm.

<u><em /></u>

<u><em>Let </em></u>\mu<u><em> = average height of hobbit.</em></u>

So, Null Hypothesis, H_0 : \mu \leq 66 cm      {means that the average height of hobbit is shorter than or equal to Yoda}

Alternate Hypothesis, H_A : \mu > 66 cm      {means that the average height of hobbit is taller than Yoda}

The test statistics that would be used here <u>One-sample t test statistics</u> as we don't know about population standard deviation;

                     T.S. =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n}}}  ~ t_n_-_1

where, \bar X = sample mean height = 80 cm

             s = sample standard deviation = 10.8 cm

             n = sample of hobbits = 7

So, <u><em>test statistics</em></u>  =  \frac{80-66}{\frac{10.8}{\sqrt{7}}}  ~ t_6

                              =  3.429

The value of t test statistics is 3.429.

<em>Now, at 0.01 significance level the t table gives critical value of 3.143 for right-tailed test. Since our test statistics is more than the critical value of t as 3.429 > 3.143, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which </em><em><u>we reject our null hypothesis</u></em><em>.</em>

<em />

Therefore, we conclude that the average height of hobbit is taller than Yoda.

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aniked [119]

Answer:

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How to find the area of a triangle with only the radius?
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