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vagabundo [1.1K]
3 years ago
12

Find the unknown side length, x. Write your answer in simplest radical form.

Mathematics
2 answers:
Lana71 [14]3 years ago
4 0
I hope this helps you

Hitman42 [59]3 years ago
4 0

Answer:

x=4

Step-by-step explanation:

It is given that LMN is a right angled triangle which is right angled at M, therefore using the Pythagoras theorem, we have

(NL)^{2}=(MN)^{2}+(ML)^{2}

Substituting the given values, we get

(\sqrt{20})^{2}=(x-2)^{2}+x^{2}

20=x^2+4-4x+x^2

20=2x^2-4x+4

2x^2-4x-16=0

x^2-2x-8=0

x^2-4x+2x-8=0

x(x-4)+2(x-4)=0

(x+2)(x-4)=0

Thus, the value of x will be equal to 4 because x cannot take the negative value.

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A function is a set of ordered pairs in which no two different ordered pairs have the same x -coordinate. An equation that produces such a set of ordered pairs defines a function. What is the catch? There can be at most one output for every input.
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Write an equation of the circle with center (3, -6) and radius 5.
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Answer:

formula for a circle: (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius.

1. Plug in center coordinates into formula

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2. Plug in radius value

(x-3)^2 + (y-(-6))^2 = 5^2

3. Simplify:

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Wasserman (1989) studied a process for the manufacturing of steel bolts. Historically, these bolts have a mean thickness of 10.0
zalisa [80]

Answer:

The mean of of the sample mean of these quality checks is 10 and the standard deviation is 0.7155.

Step-by-step explanation:

To solve this question, we use the central limit theorem.

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

In this problem, we have that:

\mu = 10, \sigma = 1.6, n = 5, s = \frac{1.6}{\sqrt{5}} = 0.7155

The mean of of the sample mean of these quality checks is 10 and the standard deviation is 0.7155.

7 0
3 years ago
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