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Dvinal [7]
4 years ago
11

What is the 7% of $20.17

Mathematics
1 answer:
KatRina [158]4 years ago
5 0

Answer:$1.41

Step-by-step explanation:

1. Convert from percent to decimal by moving decimal two places over.

2. 0.07 times 20.17 = $1.41


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Help please I’ll give brainliest
Luden [163]

I don't see any question there ... just a bunch of pretty rulers.

I'm going out on a limb here, and I'm gonna assume that the question is "Identify the number to which the arrow on each ruler is pointing.".

If that's the question, you're welcome.  If not, ignore everything I'm about to say.

Orphan ruler on page-1: 6 and 1/4

Rulers on page-2, starting at the top and working down:

6 and 3/8

1

3 and 5/8

2 and 1/2

7 and 3/4

4 and 7/8

5 and 1/8

9 and 1/2 .

If these answers are not helpful, remember:  I'm the one who had to invent the question, and for the question that I invented, these answers are all correct !

3 0
3 years ago
The volume of a rectangular prism can be found by multiplying the base area, B, times the height. If the volume of the prism is
PSYCHO15rus [73]

Answer:

Base (B) = /frac{15x² + 1 + 2}{x}

Step-by-step Explanation:

==>Given:

Dimensions of a rectangular prism are expressed as follow:

Volume (V) = 15x² + x + 2

Height (h) = x²

==>Required:

Expression of the Base area (B)

==>Solution:

Volume (V) = Base (B) × Height (h)

15x² + x + 2 = B × x²

Divide both sides by x²

\frac{15x² + x + 2}{x²} = B[tex]Base (B) = /frac{15x² + 1 + 2}{x}

4 0
3 years ago
Hi I’m back again and I need help with this question on my daily common core review sheet. Thanks a lot, answer this and you get
tatiyna

Answer:

B

Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
Insert parentheses to make the equation true then simplify
Liono4ka [1.6K]
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3 0
4 years ago
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.

6 0
3 years ago
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