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Vaselesa [24]
3 years ago
8

What is the simplified form of 1/x-1/y/1/x+1/y

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
8 0
Is this the expression to simplify?

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Classify the triangle as acute, right, or obtuse based on the side lengths of 8, 11, and 14.
ratelena [41]

Answer:

Obtuse

Step-by-step explanation:

8^2+11^2=14^2\\64+121=196\\185=196

Since the hypotenuse is bigger, the triangle is obtuse

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3 years ago
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Katrina wants to estimate the proportion of adults who read at least 10 books last year. to do​ so, she obtains a simple random
Vaselesa [24]
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size

Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))

Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))

Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
3 0
3 years ago
Which strategy best explains how to solve this problem?
photoshop1234 [79]
It is C, if it falls 14 ft. and it travels back up 7 ft. and then falls another 7 ft, and stops at the ground now you add it all up 14+7+7=28. hope that helps you.
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3 years ago
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Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per mi
irakobra [83]

Answer:

a) Mean=0 and Standard deviation=1

b) The z-scores have no units of measurement

Step-by-step explanation:

When we convert all the pulse rates of women to z-scores using the formula;

z=\frac{x-\mu}{\sigma} the mean is 0 and the standard deviation is 1.

The reason is that, the resulting distribution of z-scores forms a normal distribution which has a mean of 0 and a standard deviation of 1.

b) The z-scores are standardize scores and has no units of measurement. They give us how many standard deviations below or above the mean of the corresponding values.

8 0
3 years ago
What is the interest amount after borrowing $83,500 at a rate of 4.005% over 6 years? Round your answer to the nearest cent.
nadya68 [22]

Answer:

83,000

Step-by-step explanation:

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3 years ago
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