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tankabanditka [31]
4 years ago
11

Explain how to write and evaluate an algebraic expression.

Mathematics
2 answers:
BabaBlast [244]4 years ago
8 0
So you would start with 40/n because quotient means division and then it would be (40/n) - 13  (40 divided by n then minus 13) because the answer is thirteen less than the quotient of those numbers. since it wants you to evaluate for n=2 you would do 40/2 which is 20 then subtract 13 which is 7.

So write the expression as (40/n) -13 and when you evaluate just stick the 2 where the n is for (40/2) - 13
                                20 - 13
                                   = 7 
Svetradugi [14.3K]4 years ago
5 0
40. 40
------ -13 ------ -13. 20-13. 7
N 2
You would write this this by just looking at the key terms like for example (13 less than) which means it's being subtracted. And (quotient of 40 and a number) means that it's going to be a fraction with 40 at the top and n on the bottom. It's really simple once you get practice hope this helps :)
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HELP FOR BRAINIEST AND 50 POINTS
motikmotik
X - speed of the current
40+x - speed with current 
40-x - speed against current

t-time
(40+x)*t=100
(40-x)*t=60

           40t+xt=100
 <span>  +      40t-xt = 60
</span>           80t      =160
                t      = 2

40t+xt=100,   
40*2+2x=100
80+2x=100
2x=100-80
2x=20
x=10 mi/h

10 mi/h speed of the current.


7 0
4 years ago
Read 2 more answers
The first quartile of a data set is 72, and the third quartile is 92. Which of these values in the data set is an outlier ?
konstantin123 [22]

Answer: Option D

D. 41​

Step-by-step explanation:

A value x_i is considered an outlier if

x_i> Q_3 + 1.5IQR

or

x_i

Where

Q_3 is the third quartile

Q_1 is the first quartile

IQR is the interquartile range.

IQR = Q_3-Q_1

In this case:

Q_3=92\\Q_1=72

So

IQR = 92-72 =20

Q_3 + 1.5IQR = 92 + 1.5*20 = 122

Q_1 - 1.5IQR=72-1.5*20=42

Then the outlier values will be all those greater than 122 or less than 42

Therefore the answer is the option D.

8 0
3 years ago
The prime factor of 180
alisha [4.7K]

Answer: 5*2*2*3*3

Step-by-step explanation:

First you divide 180 by 2 and you get 90. Then you proceed to divide that by 2 again and get 45. You will then divide 45 by 3 to get 15. Then divide 15 by 3 again and get 5, which cannot be divided any smaller.

180/2=90

90/2=45

45/3=15

15/3=5

6 0
3 years ago
Which pair of angles are vertical angles?
Makovka662 [10]

Answer:

Step-by-step explanation: The answer is C

5 0
4 years ago
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As i said earlier 32
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