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Yuki888 [10]
3 years ago
6

Please help me with this it is dud this night for 25 points also please do the both

Mathematics
2 answers:
AVprozaik [17]3 years ago
8 0

Answer:

8) D

9) C

Step-by-step explanation:

MM AA TT H E I C S

8) 2/11 × 2/11 = 4/121

9) 4 vowels and 7 consonants

4/11 × 7/10 = 14/55

iogann1982 [59]3 years ago
4 0

Answer:

D 4/121

C 14/55

Step-by-step explanation:

The total number of tiles in mathematics is 11

P(a) = number of a's/ total = 2/11

We replace the tile

so there are 11 tiles and the are mathematics

P(a) = number of a's/ total = 2/11

P(a, replace then a) = 2/11 *2/11 = 4/121

P(vowel) = vowel/total = 4/11

We keep the vowel so there are only 10 tiles

3 vowels and 7 consonants

P( consonants) =  consonant/total = 7/10

P(vowel, no replace, consonant) = 4/11*7/10 = 14/55

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tigry1 [53]

Answer:

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

Step-by-step explanation:

Empirical Rule:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

Central Limit Theorem:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Population:

Mean $45.90, standard deviation $10.31.

Sample:

By the Central limit theorem, mean $45.90, standard deviation s = \frac{10.31}{\sqrt{400}} = \frac{10.31}{20} = 0.5155

Which interval can the branch manager be 95% certain that the sample mean will fall within?

By the Empirical Rule, within 2 standard deviations of the mean. So

45.90 - 2*0.5155 = $44.87

45.90 + 2*0.5155 = $46.93

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

6 0
2 years ago
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PolarNik [594]

Answer:

8x+8

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Step-by-step explanation:

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5 0
3 years ago
Help its urgent please a right answer 13 points and the brainliest
den301095 [7]
1. 100-96=. 4
2.4b
3.b=12
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6 0
2 years ago
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Help plz. i would greatly appreciate it​
vekshin1

Answer:

1) 5^2=25

2) 5^2=x

3) b^3=64

Step-by-step explanation:

To write logs of the form log_ba=x in their exponential form, you take the base b and put it to the power of x and then set that equal to a: b^x=a.

1. Here, b = 5, a = 25, and x = 2, so: 5^2=25

2. In this problem, b = 5, x = 2, and a = x, so: 5^2=x

3. Finally, here, b = b, a = 64, and x = 3, so: b^3=64

Hope this helps!

6 0
3 years ago
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Len [333]

Answer:

I would say that the answer is 4/20

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