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Crank
3 years ago
9

Jimmy ate 3/4 of a pizza. He let his brother eat 1/3 of his leftovers. How much of the entire pizza did Jimmy's brother eat?

Mathematics
1 answer:
e-lub [12.9K]3 years ago
6 0

Answer:

1/4

Step-by-step explanation:

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The fuel efficiency in miles per gallon of all bmw 320i's is (approximately) normally distributed with a mean of 25 and a standa
grigory [225]
Given:
μ = 25 mpg, the population mean
σ = 2 mpg, the population standard deviation

If we select n samples for evaluation, we should calculate z-scores that are based on the standard error of the mean.
That is,
z= \frac{x-\mu}{\sigma / \sqrt{n} }

The random variable is x = 24 mpg.

Part (i):  n = 1
σ/√n = 2
z = (24 -25)/2 = -0.5
From standard tables,
P(x < 24) = 0.3085

Part (ii): n = 4
σ/√n = 1
z = (24 -25)/1 = -1
P(x < 24) = 0.1587

Part (iii): n=16
σ/√n = 0.5
z = (24 - 25)/0.5 = -2
P(x < 24) = 0.0228

Explanation:
The larger the sample size, the smaller the standard deviation.
Therefore when n increases, we are getting a result which is closer to that of the true mean.
6 0
4 years ago
Which group considered dance more important, the Greeks or the Romans?<br> Romans<br> Greeks
Soloha48 [4]

Answer:

Greeks were the one in my opinion

7 0
4 years ago
Solve for x <br><br> 6x + 11= - (6x + 5)
Semmy [17]

Answer:

x = -4/3

Step-by-step explanation:

6x + 11 = -6x - 5

12x = -16

x = -4/3

3 0
3 years ago
Read 2 more answers
In a​ circle, a 90degrees sector has area 144pi in2. What is the radius of the​ circle?
RUDIKE [14]

Answer:

The radius of the circle is 24 inches.

Step-by-step explanation:

Central angle in a sector is 90 degrees

Area of a sector is 144\pi\ \text{inch}^2

The area of sector is given by the formula as follows :

A=\dfrac{\theta}{360}\pi r^2

r is the radius of circle

r=\sqrt{\dfrac{360 A}{\theta \pi}} \\\\r=\sqrt{\dfrac{360 \times 144\pi }{90\times \pi}} \\\\r=24\ \text{inch}

So, the radius of the circle is 24 inches.

6 0
4 years ago
Claudia is reading a book that has 360 pages.She read some of the book last week.She plans to read 46 pages today.When she does,
Ne4ueva [31]

Answer:

242 pages.

Step-by-step explanation:

Let x represent number of pages that Claudia read last week.

We have been given that Claudia is reading a book that has 360 pages. She read some of the book last week. She plans to read 46 pages today. When she does,she will be 4/5 of the way through the book.

The number of total page left after reading 46 pages and x pages last week will be equal to 4/5 of 360.

We can represent this information in an equation as:

x+46=\frac{4}{5}\cdot 360

Let us solve for x.

x+46=4\cdot 72

x+46=288

x+46-46=288-46

x=242

Therefore, Claudia read 242 pages last week.

3 0
3 years ago
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