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2 years ago

Help plz ! ! ! ! ! ! ! !

Mathematics

1 answer:

Burka [1]2 years ago

8 0

Answer:

y < - 8

Step-by-step explanation:

Given

- 6 + y < - 14 ( add 6 to both sides )

y < - 8

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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.

5 0

3 years ago

Given the function defined in the table below, find the average rate of change, in

Usimov [2.4K]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

amir lent Rs. 600 to hameed for 2 years and Rs. 150 to aman for 4 year and received altogether from both Rs. 90 as simple intere

aniked [119]

Interest = Pin = principal * interest rate * number of years

Let interest rate be i, then
600*i*2+150*i*4=90
1200i+600i = 90
i=90/(1200+600)=90/1800=1/20=0.05 or 5%

8 0

3 years ago

Help with 2&3?? Please will mark brainiest of correct

Murrr4er [49]

2 wrong 3 right because you might added wrong

5 0

3 years ago

Read 2 more answers

A video game store was getting rid of old games,selling them 7 for 100.66. .If they sold 2 games ,how much money would they have

Pani-rosa [81]

Answer: They would make $28.76.

Explanation: If 7 video games are worth $100.66, when you divide 100.66 by 7(100.66/7) you get the amount of money that 1 video game would be worth which is $14.38. Multiply 14.38 by 2(the number of video games they sold) and you get the answer of 28.76(the total money they made).

4 0

3 years ago