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2 years ago

I give brainiest for right answers answer all

Mathematics

2 answers:

Step2247 [10]2 years ago

8 0

$Hello$ $There!$

First 1: Store 3

Second 2: C.

Third: Marneisha

Four: 10

Five: Phone C.

Six: A.

Hopefully, this helps you!!

$AnimeVines$

Maslowich2 years ago

6 0

Answer:

1. Store 3

2. Aleisha

3. Phone C

4.$19.95x + $9.95y

Step-by-step explanation:

Store 1 has 62.5% of phones that are smartphones

Store 2 has about 59%

Store 3 has about 73%

store 4 has 48%

Zev read 8.4 pages

Kelly read 7.68 pages

Aleisha read about 9.52 pages

Marneisha read about 7.2 pages

Phone A uses 1.55 battery life in a day

Phone B uses about 1.94

Phone C uses 0.775

Phone D uses 1.40

Each adult ticket costs $19.95 ($19.95x) and each child ticket costs $9.95 ($9.95y)

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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.

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3 years ago

Would it be “A” or “C”?

LUCKY_DIMON [66]

Answer:

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Step-by-step explanation:

Which expression represents the statement "four less than the product of three and a number"?

A) 4-3n

B) 4-n/3

C) 3n-4

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3 years ago

In a bag are 7 red, 9 blue, 2 yellow and 4 green marbles. If you draw out a marble at random, what the probability that you will

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It should be 6/22 hope this helps

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3 years ago

A team has P points.

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Sub in the values and solve for W
50=3W+14
50-14=3W
36=3W
12=W
The team won 12 games.
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Therefore they lost 9 games

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