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CaHeK987 [17]
4 years ago
6

Please help I only need part b and part c​

Mathematics
1 answer:
IrinaVladis [17]4 years ago
5 0

Answer:

Here is the answer.

Step-by-step explanation:

b) students are the frequency. so we need to add all the frequency.

5 + 4  + 7 + 10 + 4=30 students

c) here we need to use the summation.

total/ frequency= mean

6*5=30

7*4=28

8*7=56

9*10=90

10*4=40

we need to add them all= 244

total frequency= 30

mean = 244/30= 8.133333333...≈ 8 (this is a rounded of value as  in 0.13, 3 goes on repeating.

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BaLLatris [955]
15x + 2 = 45x + 4

Subtract 2 from both sides, as well as subtracting 45x from both sides.

15x - 45x = 4 - 2

-30x = 2

Divide both sides by -30.

x = 2/-30

x = - 1/15

~Hope I helped!~
5 0
3 years ago
PLEASE HELP!!! DONT IGNORE ME!!!
MrRa [10]
1. 2x^2-x-15=0
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Remember the equations should look like Ax^2+Bx+C=0 (in this order!!)
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3 years ago
How do I simplify the n^-6*n^3 topic "Negative and Zero Exponents"
Alchen [17]
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mario62 [17]

Answer:

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lilavasa [31]
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