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Nata [24]
3 years ago
9

Someone one PLEASE HELP I've been stuck for like 2 hours

Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
7 0
72÷4= 18 the right answers and then was 25 questions minus the 18 right answers 7 was the wrong answers, so i think 25-18= 7, thats what i think, is little tricky i hope is right
Mnenie [13.5K]3 years ago
6 0
I agree with Darkcjshadow, they explained it perfectly, good luck on your quiz :'D
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A die with six faces has the number 1 painted on three of its faces, the number 2 painted on 2 of its faces, and number 3 on one
salantis [7]

Answer:

a) S = {1, 2, 3}

b) P(odd number) = \frac{2}{3}

c) No

d) Yes

Step-by-step explanation:

a) The sample space is the set of all possible outcomes. By definition, the elements of a set should not be repeated. Hence, the sample space S = {1, 2, 3}

However, the sample is not equiprobable because each element has different probabilities.

b) P(odd number) = \frac{number of odd digits}{number of faces}=\frac{4}{6}=\frac{2}{3}

Note that the odd numbers are 1 (on three faces) and 3 (on one face).

c) The fact the die has been biased does not change the possible outcomes. It only changes the probability of getting any given number.

d) Because the 3-face has been loaded, this probability changes. In fact, it is calculated thus:

Let's assume the probability for 1 or 2 is x. Then that of 3 is 2x(because it is twice the others). The sum of probabilities must be 1.

x+x+x+x+x+2x=1

7x=1

x=\frac{1}{7}

P(odd number) = 3\timesProb(1) + Prob(3)

= 3\times\frac{1}{7}+\frac{2}{7} = \frac{5}{7}

7 0
3 years ago
Math - Ratios
Llana [10]
The answer is 9 : 5
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Given the domain {-2, 1,5}, what is the range for the relation 4x +y = 3?
Simora [160]

Answer: (11, -1, -17)

Step-by-step explanation:

4x+y=3

4(-2)+y=3

-8+y=3

y=3+8

y=11

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4.1+y=3

4+y=3

y=3-4

y=-1

4x+y=3

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20+y=3

y=3-20

y= -17

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You would pay $3.75
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A colony of bacteria doubles in population every 12 hours. If there were 40 cells initially, how many will there be after 1 day?
Korolek [52]
One-hundred-sixty cells

6 0
3 years ago
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