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Luba_88 [7]
2 years ago
8

There are tickets numbered 1 to 20 that are mixed up and drawn at random. What is the probability that the ticket drawn is numbe

r 3 or 5?
Write your answer as a fraction, decimal, or percent (NOT ALL THREE).
Mathematics
2 answers:
masya89 [10]2 years ago
8 0
2/20 because you have 2 numbers out of the 20
Travka [436]2 years ago
6 0

Answer:

2/20

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,

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The data shows the total number of employee medical leave days taken for on-the-job accidents in the first six months of the yea
Inga [223]

Answer:

90

Step-by-step explanation:

The sum of squares of the deviation from mean=sum(x-xbar)²=?

x

12

6

15

9

18

12

xbar=sumx/n

xbar=(12+6+15+9+18+12)/6=72/6=12

x      x-xbar       (x-xbar)²

12      12-12=0     0

6       6-12=-6     36

15      15-12=3      9

9       9-12=-3       9

18      18-12=6      36

12      12-12=0      0

sum(x-xbar)²=0+36+9+9+36+0=90

So, the sum of squares of the deviations from the mean is 90.

3 0
3 years ago
In class, joe notices a triangular shaped desk. leg a is 4 and leg b is 10. find<br> c.
Juli2301 [7.4K]
A^2 + b^2 = c^2 fill in the know numbers a=4 b=10
$^2 +10^2 = 116
now find the square root of that its 
c is approx 10.8 
7 0
3 years ago
Which is the correct second step for solving the equation (×+3)^2-4=18
Aleksandr-060686 [28]
(x^2)+9-4=18
x^2+5=18
7 0
3 years ago
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on th
Artemon [7]

Answer:

72.51

Step-by-step explanation:

Given that :

Lab score % = 23%

Each Major test % = 22.5%

Final exam % = 32%

Score :

Lab score = 96

First Major test = 64

Second major test = 62

Final exam = 69

Hence,

Weighted average = Σ(weight % * score)

Weighted average = Σweight_1*score_1 +.. Weight_n * score_n)

(0.23 * 96) + (0.225 * 64) + (0.225 * 62) + (0.32 * 69) = 72.51

3 0
2 years ago
Which of the following sets are not well-defined?
Julli [10]
Set of all counting number
3 0
2 years ago
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