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nikklg [1K]
3 years ago
9

When the sum of 1/4 + 1/2 is divided by the product of 1/4 + 1/2 what is the quotient

Mathematics
1 answer:
zepelin [54]3 years ago
4 0
<span>When the sum of 1/4 + 1/2 is divided by the product of 1/4 + 1/2 what is the quotient </span>2
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If tom has 5 time as many as read and read have 5 how many is that
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So if he has 5 time more than he has read(5) than 5 multiplied by 5 is 25. I hope this helps 
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3 years ago
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If the average grade of an English class rose from 70 to 85, what is the approximate percent increase?
FrozenT [24]

Answer:

The correct answer is actually around 21%. Are you sure the question wasn't asking what the approximate percent decrease from 85 to 70 was? Because in that case it would be around 17%.

Step-by-step explanation:

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2 years ago
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The ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years. Approxima
worty [1.4K]

We have been given that the ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years.

We are asked to find the percentage of students that are between 14 and 18 years old.

First of all, we will find z-score corresponding to 14 and 18 using z-score formula.

z=\frac{x-\mu}{\sigma}

z=\frac{14-15}{2}

z=\frac{-1}{2}

z=-0.5

Similarly, we will find the z-score corresponding to 18.

z=\frac{18-15}{2}

z=\frac{3}{2}

z=1.5

Now we will find the probability of getting a z-score between -0.5 and 1.5 that is P(-0.5.

P(-0.5

Using normal distribution table, we will get:

P(-0.5

P(-0.5

Let us convert 0.62465 into percentage.

0.62465\times 100\%=62.465\%\approx 62.5\%

Therefore, approximately 62.5\% of the students are between 14 and 18 years old.

8 0
3 years ago
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No pic/link just type answer pls.
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This problem requires you to use the equation for the volume of a cone. The equation is \pi r^{2}\frac{h}{3}. Plug in the corresponding numbers to solve the equation. The equation should be \pi (3\frac{3}{16})^{2} \frac{9\frac{3}{4} }{3}. Simplify the equation to get 103.74 in^{3}.

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