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3 years ago

13

Please help ASAP I don’t get it

1 answer:

vampirchik [111]3 years ago

7 0

Answer:

1

Step-by-step explanation:

Its number one becuase when u multiply 1x1 you get one.

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Jin's mother estimates there is a half-gallon of fruit punch remaining in the container. There are actually 72 ounces of fruit p

Ivanshal [37]

Answer:

89%

Step-by-step explanation:

the real answer is 64 fluid ounces

64/72*100 which is 88.89% or 89%

Hope this helps plz hit the crown :D

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3 years ago

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If five notebooks cost $5.25 how much would 3 cost?

34kurt

3.15. Just find the unit rate which is 1.5 and multiply that by 3

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3 years ago

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Triangle ABC has angle measures as shown A x-5 B 3x+30 C 35 qhat is the value x

Vinvika [58]

Answer:

$x=30\ degrees$

$m$

$m$

Step-by-step explanation:

we know that

The sum of interior angles in a triangle must be equal to 180 degrees

so

$(x-5)+(3x+30)+(35)=180\°$

solve for x

$4x=180\°-60\°$

$4x=120\°$

$x=30\°$

$m$

$m$

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3 years ago

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The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first deter

VMariaS [17]

Answer:

He must survey 123 adults.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

Assume that a recent survey suggests that about 87% of adults have heard of the brand.

This means that $\pi = 0.87$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a p-value of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage?

This is n for which M = 0.05. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.05 = 1.645\sqrt{\frac{0.87*0.13}{n}}$

$0.05\sqrt{n} = 1.645\sqrt{0.87*0.13}$

$\sqrt{n} = \frac{1.645\sqrt{0.87*0.13}}{0.05}$

$(\sqrt{n})^2 = (\frac{1.645\sqrt{0.87*0.13}}{0.05})^2$

$n = 122.4$

Rounding up:

He must survey 123 adults.

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3 years ago

Cual es la ecuación de la recta vertical que pasa por (2,3)?

NeTakaya

Answer:

a

Step-by-step explanation:

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3 years ago