3 years ago

What is the definition of a random sample

Mathematics

1 answer:

EleoNora [17]3 years ago

8 0

Answer:

Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen

Step-by-step explanation:

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The components of vector are ax and ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Fi

Andru [333]

we can use formula

$\theta=tan^{-1}(\frac{a_y}{a_x})$

(a)

we are given

$a_x=12,a_y=12$

now, we can plug values

$\theta=tan^{-1}(\frac{12}{12})$

$\theta=tan^{-1}(1)$

$\theta=\frac{\pi}{4}rad$

(b)

we are given

$a_x=20,a_y=12$

now, we can plug values

$\theta=tan^{-1}(\frac{12}{20})$

$\theta=tan^{-1}(\frac{3}{5})$

$\theta=30.96^{\circ \:}$

(c)

we are given

$a_x=12,a_y=20$

now, we can plug values

$\theta=tan^{-1}(\frac{20}{12})$

$\theta=tan^{-1}(\frac{5}{3})$

$\theta=59.03^{\circ \:}$

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2 years ago

A square rug covers 79 square feet of floor. What is the approximate length of one side of the rug? (Approximate to the nearest

Degger [83]

Answer:

8.89 feet

Step-by-step explanation:

The square of the side length is 79 ft², so the side length is the square root of that:

√(79 ft²) ≈ 8.88819 ft ≈ 8.89 ft

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3 years ago

Simplify the polynomial (4n2 + 3n - 5) - (2n2 + 3n+ 6)

saul85 [17]

Answer:

2n^2 - 11

steep by steep explanation

=(4n^2 + 3n -5) -(2n^2 + 3n +6)

= 4n^2 +3n -5 - 2n^2 - 3n -6

= 2n^ - 11

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Irina18 [472]

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3 years ago