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IRISSAK [1]
3 years ago
8

Find the sum 2n^3 +4n^2-7 and -n^3-8n-2

Mathematics
2 answers:
Valentin [98]3 years ago
8 0

Answer:

n^{3}+4n^{2}-8n-9

Step-by-step explanation:

The only thing that you have to do is to add the different terms that have the same exponent and the same algebraic term.

2n^{3} -n^{3}= n^{3}

4n^{2}

-8n

-7 -2= -9

After adding up the different terms:

n^{3}+4n^{2}-8n-9

Dominik [7]3 years ago
7 0

Answer:

top of fraction: -2(n^8+2)(n^3+8n+2)

bottom of fraction: n^5

Step-by-step explanation:

use PEMDAS for the first part of the equation, then for the other half multiply it by -1, then pull them back into the equation and solve, and you should get the answer above the way i did it, if not then hope you find another person who is correct, remember i'm a student as well i'm not perfect


-Deuce

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6 0
4 years ago
What is the mode and mean for class A and the range and medium for class B????
melamori03 [73]
Hello!

First you have to list the data in both classes

Class A
41, 42, 45, 46, 47, 48, 52, 53, 54, 59, 61, 61, 64, 68, 71, 82, 85, 90

Class B
41, 42, 59, 62, 64, 69, 71, 75, 77, 78, 78, 80, 83, 84, 84, 86, 86, 87, 92, 92, 95
------------------------------------------------------------------------------------------------------
First we are going to find the mode and mean of class A

The mode is the number that appears the most

The number that appears the most is 61

The mode is 61

To find the mean you add all the numbers together and divide the sum by the amount of numbers added

41 + 42 + 45 + 46 + 47 + 48 + 52 + 53 + 54 + 59 + 61 + 61 + 64 + 68 + 71 + 82 + 85 + 90 = 1069

Divide this by the amount of numbers added

1069 / 18 = 59.3888...

The mean is 59.3888

The mode is 61 and the mean is 59.39 for class A
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We are going to find the range and median for class B

To find the range you subtract the smallest number from the largest on

The smallest number is 41
The largest number is 95

Subtract these

95 - 41 = 54

The range is 54

To find the median you list the numbers from least to greatest and look for the number in the middle

41, 42, 59, 62, 64, 69, 71, 75, 77, 78, 78, 80, 83, 84, 84, 86, 86, 87, 92, 92, 95

The number in the middle is 78

The range is 54 and the median is 78
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Hope this helps!
6 0
4 years ago
The second digit after the decimal point in a number is 4. What is the value of 4 in the number? 1 thousandth 4 thousandths 1 hu
MrMuchimi

Answer:

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Step-by-step explanation:

Hello!

The second digit after the decimal point is 4 is shown by

0.04

The points after a decimal point go tenths, hundredths, thousandths etc.

The answer is D. 4 hundredths

Hope this helps!

3 0
3 years ago
Read 2 more answers
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7 0
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