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2 years ago

How to subtract mixed fractions with same denominators.

2 answers:

6 0

First , subtract the whole number
then , subtract the fraction. Subtract the numerators and keep the denominator the same.
Finally u simplify

Nataly_w [17]2 years ago

5 0

Answer:Rewrite the problem in vertical form.

Compare the two fractions.

If the top fraction is larger than the bottom fraction, go to Step 3.

If not, in the top mixed number, take one whole and add it to the fraction part, making a mixed number with an improper fraction.

Subtract the fractions.

Subtract the whole numbers.

Simplify, if possible.

Step-by-step explanation:

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uranmaximum [27]

Answer:

Step-by-step explanation:

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3 years ago

A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 adult Americans an

Y_Kistochka [10]

Answer: a) 15, b) 1.

Step-by-step explanation:

A researcher studying public opinion of proposed social security changes obtains a simple random sample of 35 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more Americans does the researcher need to sample in the following cases?

(a) 10% of all adult Americans support the changes

Here, $np>5\ and\ n(1-p)>5$

And , $p=0.10$

So, consider the equality, to find the value of 'n'.

$np=5\\\\n\times 0.10=5\\\\n=\dfrac{5}{0.10}\\\\n=50$

So, there are $50-35=15$ more adult Americans needed.

(b) 15% of all adult Americans supports the changes

Here, $p=0.15$

So, again we get that

$np=5\\\\n\times 0.15=5\\\\n=\dfrac{5}{0.15}\\\\n=33.33\\\\n\approx 34$

So, there are $35-34=1$ more adult Americans needed.

Hence, a) 15, b) 1.

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4 years ago

Make a conjecture about the next term in the sequence 3, -5, 7, -9, 11

iVinArrow [24]

Answer:

-13

Step-by-step explanation:

its counting odd numbers in order but switching their positive and negative

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3 years ago

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Natasha2012 [34]

Answer:

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3 years ago