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chubhunter [2.5K]
3 years ago
6

16. FIND THE ERROR Thomas claims that a reflection in the x-axis

Mathematics
1 answer:
irina1246 [14]3 years ago
6 0
No it is not the same as a rotation because when you reflect something you “mirror it” so basically it is the opposite and the side that was in the left is now on the right
Where as when you rotate about the origin the ordination changes but it doesn’t “flip” hope this helps
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B One term of the polynomial has a degree of 3

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I am very bad at math and need help with is 15÷2681
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What similarity statement can you write relating the three triangles in the diagram?
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Step-by-step explanation:

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2 years ago
Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If
djyliett [7]

Answer:

Option a. 0.9811

Step-by-step explanation:

First, you need to use a normal distribution table to solve this. If you don't have it, then see the attached table so you can guide yourself.

Now, we want to know the probability of randomly select 75 women whose height have a mean between 63 and 65 inches, knowing that in general, the mean is 63.5 and standard deviation of 2.5

To do this, you should calculate first the Z score value for both heights, one for 63 inches and the other with 65 inches. Then, with those values, we'll look the table to get the area under the curve, and thus, the probability. To calculate Z use the following expression:

Z = x - μ / (σ/√n)

Where:

μ: mean height

σ: standard deviation

x: height required

n: sample population

We have all the data so let's calculate both values of Z:

Z1 = 63 - 63.6 / (2.5/√75) = -2.08

Z2 = 65 - 63.6 / (2-5/√75) = 4.85

With these Z score, let's watch the table, and see which area belongs to,

In the case of Z1, the area is 0.0188, while Z2 is 1.

To know the probability, all we need to do is substract those values:

P = 1 - 0.0188 = 0.9812

Option a) is the most accurate and closest result to this.

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3 years ago
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Anna11 [10]

Answer:

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y - (-6) = -2/7(x - 4)

y + 6 = -2x/7 + 8/7

7y + 42 + 2x - 8 = 0

7y + 2x + 34 = 0

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