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Likurg_2 [28]
3 years ago
5

(sinB+1)(cosBtanB-1)

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
6 0
Here you go!!! I hope this helps

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Answer: $115

Step-by-step explanation:

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3 years ago
You are trying to estimate the average amount a family spends on food during a year. In the past the standard deviation of the a
svetoff [14.1K]

Answer:

n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663

So the answer for this case would be n=2663 rounded up to the nearest integer

Step-by-step explanation:

We have the following info:

ME = 50 margin of error desired

\sigma = 1000 the standard deviation for this case

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is \alpha=0.01. And for this case would be z_{\alpha/2}=2.58, replacing into formula (b) we got:

n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663

So the answer for this case would be n=2663 rounded up to the nearest integer

5 0
3 years ago
I need help please please please
SCORPION-xisa [38]
Remember this:

Denominator multiplies with the whole number(number on the side) The sum of that plus the numerator will give you the value for the numerator in the improper fraction. The denominator will stay the same.
Now try it on your own!
12×2+7=numerator.
7 0
3 years ago
Read 2 more answers
Log3(7x) Use the Laws of Logarithms to expand the expression.
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Log3(7) + log3(x)
Terms that are multiplied inside one log become added when you separate them where each term gets its own log.
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If there are 120 calories in 4 ounces of hot fudge, how many calories are in 8
miss Akunina [59]

Answer:

240 calories

Step-by-step explanation

You're doubling the amount of fudge, so double the amount of calories. You could also think of it as 2 4-oz portions of fudge, then just add the calories (120+120) together.

3 0
3 years ago
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