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2 years ago

Find the value of x.

Mathematics

2 answers:

Pie2 years ago

8 0

Answer:

x = √72 and yes, it forms a Pythagorean triple

Step-by-step explanation:

a^2 + b^2 = c^2,

3 is a, x is b, anf 9 is c

3^2 + x^2 = 9^2

9 + x^2 = 81

Subtract 9 from both sides

x^2 = 72

x = √72

a Pythagorean triple is a^2 + b^2 = c^2, and this has it

nekit [7.7K]2 years ago

7 0

Answer:

X = 9.4

Step-by-step explanation:

Pythagorean Theorem:

<u>Formula: a² + b² = c²</u>

9 x 9 = 81
3 x 3 = 9
81 + 9 = 90
√90 = 9.48 (Rounded 9.5)

- A Pythagorean triple consists of any three positive integers.

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Assume a recent sociological report states that university students drink 5.10 alcoholic drinks per week on average, with a stan

Lerok [7]

Answer:

Mean of sampling distribution = 5.10 alcoholic drinks per week

Standard deviation of the sampling distribution = 0.11

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 5.10 alcoholic drinks per week

Standard Deviation, σ = 1.3401

Sample size, n = 150

a) Mean of sampling distribution

The best approximator for the mean of the sampling distribution is the population mean itself.

Thus, we can write:

$\mu_{\bar{x}} = \mu = 5.10$

b) Standard deviation of the sampling distribution

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{1.3401}{\sqrt{150}} = 0.11$

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2 years ago

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MArishka [77]

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7 0

2 years ago

Read 2 more answers

Question 2 (6 points)

alexdok [17]

Answer:

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Step-by-step explanation:

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4 0

2 years ago

Write 400 in scientific notation.

OlgaM077 [116]

= 4 × 10 to the power of 2

Step-by-step explanation:

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2 years ago

I’ll mark you as brainliest

Lapatulllka [165]

Step-by-step explanation:

1) -5n+10n

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= 2x-x-9-10

= x-19

3) -5(x-10)-x

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4) 9-5(1-7x)

= 9-5+35x

= 35x+4

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= 3^2-2

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2 years ago