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Sav [38]
3 years ago
15

The probability of an outcome that lies within 68% of the mean is a good indicator that it lies in which standard deviation?

Mathematics
1 answer:
kotegsom [21]3 years ago
8 0
Yes the probability of an outcome that lies within 68% is a good indicator that lies in which standard deviation.

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Evaluate each expression please help(the crossed out ones are irrelevant)
olga nikolaevna [1]
9. 31 + 5 = 36
10. 16 - 4 = 12
12. 9
13. 44 + 34 = 78
14. 101 - 1 = 100

15. -539 ??? 
16. 15 ??
17. |-435| = 435
7 0
2 years ago
Please help show work too please thank you
Black_prince [1.1K]
(3x-9) +(x+19)+x=180
5x+10=180
-10=-10
5x=170
5 = 5
x=34

2x+(2x+10)+x=180
5x+10=180
-10=-10
5x=170
5 = 5
x=34

yes they are similar
6 0
3 years ago
What is the value of the sum of all the terms of the geometric series 300, 60, 12, …?
ruslelena [56]
<h3>Answer:   375</h3>

=========================================

Work Shown:

a = 300 = first term

r = 60/300 = 0.2 = common ratio

We multiply each term by 0.2, aka 1/5, to get the next term.

Since -1 < r < 1 is true, we can use the infinite geometric sum formula below

S = a/(1-r)

S = 300/(1-0.2)

S = 300/0.8

S = 375

----------

As a sort of "check", we can add up partial sums like so

  • 300+60 = 360
  • 300+60+12 = 360+12 = 372
  • 300+60+12+2.4 = 372+2.4 = 374.4
  • 300+60+12+2.4+0.48 = 374.4+0.48 = 374.88

and so on. The idea is that each time we add on a new term, we should be getting closer and closer to 375. I put "check" in quotation marks because it's probably not the rigorous of checks possible. But it may give a good idea of what's going on.

----------

Side note: If the common ratio r was either r < -1 or r > 1, then the terms we add on would get larger and larger. This would mean we don't approach a single finite value with the infinite sum.

3 0
2 years ago
An above-ground garden is in the shape of a rectangular prism measuring 5 feet by 8 feet by 1.5 feet. The organic soil costs $1.
Anit [1.1K]

Answer:$72.00

Step-by-step explanation: To find the volume you do 5×8×1.5 which equals 60. Then you multiply 60 by 1.20 to find your total cost. Answer is 72

5 0
3 years ago
Order of operations (GEMS)
cestrela7 [59]
(6+2*3)/(9-7)^2
(6+6)/(2)^2
12/4
3

Final answer: 3
Remember to simplify within parentheses first and then divide the two values in the end.
3 0
3 years ago
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