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Sidana [21]
2 years ago
12

Please help!!!!! Please explain too, I want to understand it!

Mathematics
1 answer:
lubasha [3.4K]2 years ago
3 0
Can you send a better picture so I can understand it
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What is the rule for calculating |x| for any value of x?
padilas [110]
Anything with || around it is a whole value. It’s always a positive. For example, |-56|=56. Now, if the negative was on the outside, it would be a negative like so; -|10| =-10
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What is (2/3 x 3/5) - (3/4 x 1/6)
Kaylis [27]

Answer:

2/3×3/5=2/3. 3/4×1/6=1/8

2/3-1/8=11/40

8 0
4 years ago
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The expression (2 + 3in2 is equal to<br> 2<br> -5 + 12i<br> -5
blondinia [14]

answer : 2nd one

Step-by-step explanation:

6 0
3 years ago
What is -4x - 7 - 3x + 4 = 25?​
g100num [7]

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Hope this helps! :)

6 0
4 years ago
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Students at a certain school were​ surveyed, and it was estimated that 10​% of college students abstain from drinking alcohol. T
MissTica

Answer:

a)

<em> you are unwilling to predict the proportion value at your school  = 0.90</em>

<em>b) </em>

<em>The large sample size 'n' = 864</em>

<em></em>

Step-by-step explanation:

Given estimated proportion 'p' = 10% = 0.10

<em>Given Margin of error M.E = 0.02</em>

<em>Level of significance α = 0.05</em>

a)

<em>  you are unwilling to predict the proportion value at your school </em>

<em>   q = 1- p = 1- 0.10 =0.90</em>

b)

<em>The Margin of error is determined by</em>

                        M.E = \frac{Z_{\frac{\alpha }{2} } \sqrt{p(1-p)} }{\sqrt{n} }

                       0.02 = \frac{1.96 X \sqrt{0.10 (0.90)} }{\sqrt{n} }

Cross multiplication , we get

                      \sqrt{n}  = \frac{1.96 X \sqrt{0.10 (0.90)} }{0.02 }

                      √n  = 29.4

<em>Squaring on both sides , we get</em>

<em>                      n = 864.36</em>

<u><em>Conclusion</em></u><em>:-</em>

<em>The large sample size 'n' = 864</em>

<em></em>

<em></em>

7 0
3 years ago
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