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3 years ago

Do problem 10 through 11

Mathematics

1 answer:

AleksandrR [38]3 years ago

6 0

Hello! I can help!
10:
a. 4-5 magazines interval contains the fewest data values.
b. There are 20 students in the class. 15 + 3 + 2 is 20.
c. Ignore the 6-7 interval and count the students from the others. 17/20 students read less than 6 magazines. 85% of students read less than 6 magazines.
d. You can’t exactly find the mean of the data, because you don’t know the exact number of how many each student read. The median would be in the range of 2-3, but you can’t find that either. You can’t find any of them without the exact numbers.

11. There were way more than 12% of songs that took 5-8 seconds to download. The error was getting the number of songs that took that long to download and putting it as a percentage. 12/36 songs took 5-8 seconds to download. 12/36 equals 1/3 (0.333) or simply 33%. The real answer is that 33% of the songs took 5-8 seconds to download.

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The sum of three numbers is 855. One of the numbers, x, is 50% more than the sum of the other two numbers. What is the value of

Snowcat [4.5K]

Answer:

The value of x = 513

Step-by-step explanation:

Let x, y, and z be the three numbers

Given

$x+y+z=855$

Assuming x be the number which is 50% more than the sum of the other two numbers.

i.e.

(150)% of (y+z) = 1.5(y+z)

y + z = x/1.5

As we know that

$x + y + z = 855$

substituting y + z = x / 1.5 in the equation

$x+\frac{x}{1.5}=855$

Multiply both sides by 1.5

$x\cdot \:1.5+\frac{x}{1.5}\cdot \:1.5=855\cdot \:1.5$

$1.5x+x=1282.5$

$2.5x=1282.5$

Divide both sides by 2.5

$\frac{2.5x}{2.5}=\frac{1282.5}{2.5}$

$x = 513$

Therefore, the value of x = 513

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3 years ago

Analyze the key features of the graph of f(x) shown below. Use rules of transformations and the parent function to formulate an

sweet [91]

Answer:

The required equation is $f(x)=\frac{1}{x+3}-2$ .

Step-by-step explanation:

The parent function of a rational function is

$g(x)=\frac{1}{x}$

The transformation is defined by the function

$f(x)=\frac{1}{x+a}+b$

Where, a represents the horizontal shift and b represents the vertical shift.

If a>0, then graph of parent function will shift left side and if a<0, then graph of parent function will shift right side.

If b>0, then graph of parent function will shift upward and if b<0, then graph of parent function will shift downward side.

Since the graph of parent function shifts 3 units left and 2 units down. Therefore the value of a is 3 and the value of b is -2.

The new function is

$f(x)=\frac{1}{x+3}-2$

Therefore the required equation is $f(x)=\frac{1}{x+3}-2$ .

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3 years ago

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Answer:

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3 years ago

out of 1000 student 350 students passed the examand rest were failed find the empirical probability of failed student

torisob [31]

Answer:

out of 1000 student 350 students passed the examand rest were failed find the empirical probability of failed student

1000-350=650

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3 years ago

8) At the school carnival, Mike will play a game in which he will toss a penny, a nickel, and a dime at the same time. He will b

Alex17521 [72]

Answer:

The require expected value of x is $\frac{9}{2}$

Step-by-step explanation:

Consider the provided information.

Mike will play a game in which he will toss a penny, a nickel, and a dime at the same time.

The probability of head is $\frac{1}{2}$

He will be awarded 3 points for each coin that lands with heads faceup.

Let the random variable x represent the total number of points awarded on any toss of the coins.

Thus the expected value is:

$\text{Expected value}=\sum x_i p(x_i)$

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$\text{Expected value}=\frac{9}{2}$

Hence, the require expected value of x is $\frac{9}{2}$

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3 years ago