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sergey [27]
2 years ago
14

Which of the following is equal to the expression below?

Mathematics
1 answer:
GuDViN [60]2 years ago
6 0
256/3.hope this helps
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One researcher wishes to estimate the mean number of hours that high school students spend watching tv on a weekday. a margin of
PtichkaEL [24]
Margin of error, e = Z*SD/Sqrt (N), where N = Sample population

Assuming a 95% confidence interval and substituting all the values;
At 95% confidence, Z = 1.96

Therefore,
0.23 = 1.96*1.9/Sqrt (N)

Sqrt (N) = 1.96*1.9/0.23

N = (1.96*1.9/0.23)^2 = 262.16 ≈ 263

Minimum sample size required is 263 students.

3 0
3 years ago
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What value of x would result in the numerical value of zero in the expression 7+x+(−10) ?
sergejj [24]

Answer:

x = 3

Step-by-step explanation:

So if we plug in 3 to 7+x+(-10), it simplifys to

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4 0
3 years ago
Which fraction is equivalent to 38%?<br> 3/8<br> 9/25<br> 19/50<br> 3 4\5
KonstantinChe [14]
In order to find a fraction, We know that a percentage is out of a 100. This means we can now place our fraction as:

38/100

In order to find the actual fraction, we will want to simplify. Lets find our least common factor and work down from there. Since we know that 2 can go into both of them, lets reduce by 2.

This means our fraction will now look like: 

19/50

Since 19 is a prime number and cannot be divided by anything but 1 and itself, we know that this is our simplified form. 

This means:

19/50 is the fraction equivalent to 38%. 
5 0
3 years ago
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PLEASE HELP ME I BEG YOU !!!
boyakko [2]
Hi,

f(x)=\log(x)   FALSE

f(x)=\log(x-4)+1  TRUE

→  f(x)=\log(x-2)

f(x)=\log(x+2)  FALSE

f(x)=2log(x)  TRUE
4 0
3 years ago
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What is a reflex angle?
jarptica [38.1K]
A reflex angle is the larger angle, it’s always more than 180* (half a circle) but less then 360* (a full circle).
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3 years ago
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