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Deffense [45]
4 years ago
11

What is the difference between 4x and x4? Evaluate both of these expressions when X=2

Mathematics
2 answers:
agasfer [191]4 years ago
8 0
X4 does not make sense... on the other hand, 4x= 8 since 4*2= 8
Bezzdna [24]4 years ago
7 0
There is no difference because 4•2 and 2•4 is the same you are going to get the same answer either way
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The weight of laboratory mice follows a normal distribution, with a mean of 0.68 ounce and a standard deviation of 0.02 ounce. W
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Answer:

A.99.7%

Step-by-step explanation:

We are given;

  • Mean of a distribution, μ as 0.68 ounce
  • Standard deviation, σ as 0.02 ounce
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We are required to calculate the percentage of the weight to be between 0.62 ounce and 0.74 ounce

Step 1: Calculate the Z-score

To get the Z-score we use the formula;

Z-score = (x-μ)/σ

Therefore, when x = 0.62

Then z score = (0.62 - 0.68 ) ÷ 0.02

                     = -3

When, x = 0.74

Then, Z score = (0.74 - 0.68) ÷ 0.02

                       = 3

Step 2:  we use the Z-score table or the empirical rule

Using the Z-score table;

P(-3 < z < 3) = 99.7%.

Therefore; the percentage of mice that weigh between 0.62 ounce and 0.74 ounce is 99.7%.

7 0
3 years ago
The table shows the number of different types of movies in Lavar's
Lady_Fox [76]

Answer:

I would know if the table was included

Step-by-step explanation:

just insert the number of each type of movie into the place of M and see if it is greater than 15

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Plz. solve this sum
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Answer:

\large\boxed{a-b=11}

Step-by-step explanation:

\text{Use}\ x^2-y^2=(x-y)(x+y).\\\\\text{We have}\\\\a^2-b^2=275\ \text{and}\ a+b=25.\\\\\text{Substitute:}\\\\275=(a-b)(25)\qquad\text{divide both sides by 25}\\\\\dfrac{(a-b)(25)}{25}=\dfrac{275}{25}\\\\\boxed{a-b=11}

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Answer:

Step-by-step explanation:

B

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3 years ago
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polet [3.4K]

Answer:

The ratio is the same

Step-by-step explanation:

Bianca- 20:14

= 10:7

Logan- 10:7

The ratio is the same

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3 years ago
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