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lesantik [10]
2 years ago
6

The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea

n of 358 and a standard deviation of 37.According to the standard deviation rule, approximately 68% of the students spent between $ and $ on textbooks in a semester.
Mathematics
1 answer:
Mnenie [13.5K]2 years ago
7 0

Answer:

I'm sorry I don't know

Step-by-step explanation:

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Please help me it would mean a lot thank you:)
Alexeev081 [22]
Number 4. will be a. because if you do 7*9=63*10=630.
5 0
3 years ago
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Find the solution of 4x2y′′−4x2y′+y=0,x>04x2y″−4x2y′+y=0,x>0 of the form y1=xr(1+c1x+c2x2+c3x3+⋯)
BabaBlast [244]

Answer:

r = 1/2

c1 = 3/4

c2 = 27/64

c3 = 405/1408

Step-by-step explanation:

Find the solution of 4x2y′′−4x2y′+y=0,x>04x2y″−4x2y′+y=0,x>0 of the form y1=xr(1+c1x+c2x2+c3x3+⋯)

r = 1/2

c1 = 3/4

c2 = 27/64

c3 = 405/1408

The solution is attached.

5 0
3 years ago
Help me please - ?! :C
Andrej [43]

The slope is 2.

Equation if needed: y= 2x + 1

5 0
2 years ago
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In a survey of 200 game lovers,it was found that 130 liked football, 90 liked cricket, and 20 didn't like both games.i) How many
qaws [65]

Step-by-step explanation:

Hey, there!!

Your required answer is:

i). = 40

ii). = 90

See explanation in picture..

Here, no(F) represents no. of people who just like football. and n (F intersection C) represents who like both games.

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

5 0
3 years ago
Sam is on the swim team. Each week he swims a total of
dimulka [17.4K]
Ok so there are 1000 meters in a kilogram right so 
9000 meters= 9 kilograms
5 0
3 years ago
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