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erma4kov [3.2K]

3 years ago

9

A scientist measures the heights of 25 oak trees. When he finds a the mean of these data which phrase of inferential statistics

will it represent A. Data organization B: Data analysis C: Data gathering D: probability-based inference

2 answers:

igor_vitrenko [27]3 years ago

5 0

Answer:

data analysis

Step-by-step explanation:

iren2701 [21]3 years ago

3 0

D:probability-based inference

Hope i helped :)

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In a right triangle ABC, CD is an altitude, such that AD=BC. Find AC, if AB=3 cm, and CD=√2 cm.

Zielflug [23.3K]

Given that triangle ABC is right angle triangle. CD is altitude such that AD=BC

ABC is a right angle triangle so apply Pythogorean theorem

$AC^{2} + BC^{2} = AB^{2}$

$AC^{2} + AD^{2} = AB^{2}$ (Given that AD = BC)

$AC^{2} + AD^{2} = 3^{2}$ (Given that AB=3)

$AC^{2} + AD^{2} = 9$ ...(i)

ADC is a right angle triangle so apply Pythogorean theorem

$AD^{2} + CD^{2} = AC^{2}$

$AD^{2}+(\sqrt{2})^2= AC^{2}$

$AD^{2}+2= AC^{2}$

$AD^{2}=AC^{2} -2$ ...(ii)

Plug value (ii) into (i)

$AC^{2} + AC^{2}-2 = 9$

$2AC^{2} -2=9$

$2AC^{2} =11$

$AC^{2} =\frac{11}{2}$

$AC=\sqrt{\frac{11}{2} }$

Hence final answer is $AC=\sqrt{\frac{11}{2} }$

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3 years ago

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Am I the only one whose parents yell their name and when you tell back yes mom they don’t answer?

arsen [322]

No your not the only one

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2 years ago

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Louis needs to secure his tent.He will use a rope to go down the edge of the tent, straight out to a post and back to the starti

tester [92]

Answer:

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Step-by-step explanation:

4 0

2 years ago

Question 3 (3 points) <br> Solve 8 = 2x + 4. (3 points)

mrs_skeptik [129]

X=2

-4 on both sides

4=2x

divide by 2 on both sides

X=2

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3 years ago

3. Jada has a coin jar containing n nickels and d dimes worth a total of $3.65. The

Ghella [55]

Answer:

C

Step-by-step explanation:

Here, we want to find an equation in the options which is same as the equation given in the question;

The equation we are testing against is;

0.05n + 0.1d = 3.65

What we can do here is divide through by 0.01

So we will have;

0.05n/0.01 + 0.1d/0.01 = 3.65/0.01

= 5n + 10d = 365

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3 years ago