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vekshin1
3 years ago
8

Why could I write 10 + 10 + 8 + 8 as (10*2) + (8*2)?

Mathematics
1 answer:
Alisiya [41]3 years ago
6 0

Answer:

yes

Step-by-step explanation:

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3. Two dice are rolled. What’s the conditional probability that both dice are 5’s if it’s known that the sum of points is divisi
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Answer:

Pr =\frac{1}{3}

Step-by-step explanation:

Given

S = \{(1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6)(2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)

(3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6)(4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)

(5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6)(6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)\} --- sample space

First, list out all outcomes whose sum is divisible by 5

A = \{(4,6), (5,5),(6,4)\}

So, we have:

n(A) = 3

Next, list out all outcomes that has an outcome of 5 in both rolls

B = \{(5,5)\}

n(B)  =1

The required conditional probability is:

Pr =\frac{n(B)}{n(A)}

Pr =\frac{1}{3}

8 0
3 years ago
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4 years ago
Read 2 more answers
For a population with µ = 100 and σ = 20, what is the X value corresponding to z = -0.75?​
Savatey [412]

The X value corresponding to z = -0.75 will be 85. Then the correct option is A.

<h3>What is the z-score?</h3>

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The z-score is given as

z = (x - μ) / σ

Where μ is the mean, σ is the standard deviation, and x is the sample.

For a population with µ = 100 and σ = 20.

Then the X value corresponding to z = -0.75 will be

-0.75 = (x - 100) / 20

   -15 = x - 100

      x = 85

Then the correct option is A.

More about the z-score link is given below.

brainly.com/question/15016913

#SPJ1

5 0
2 years ago
Select the correct answer.
svet-max [94.6K]

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Answer:

  C.  y = 50x + 3.5

Step-by-step explanation:

100 miles in 2 hours is 100/2 = 50 miles per hour. Multiplying that rate by x hours gives the miles traveled in addition to the 3.5 miles so far. The appropriate equation for miles traveled is ...

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If you add a ten thousands digit that is 3 times the thousands digit to the number 3721, what is the new number?
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