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3 years ago

What is the difference between joint and marginal frequency?

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

5 0

Answer:

marginal frequencies total row and total colum entries in the body are called joint frequency . -angie :)

-have a great day!

EastWind [94]3 years ago

4 0

Marginal frequencies total row and total colum.......entries in the body are called joint frequency

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hodyreva [135]

(1) Answer: Identity true

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3 years ago

Can you help me with this problem please?????

Pepsi [2]

Answer:

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5 0

3 years ago

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The vertices of quadrilateral MNPQ are M(-3,-2), N(-1,4), P(2,4), Q(4,-2). Translate quadrilateral MNPQ using the rule (x,y)-&gt

notsponge [240]

Answer:

Here's what I get.

Step-by-step explanation:

The rule is (x, y) ⟶ (x + 3, y + 4).

That means you must move each point three units to the right and four units up. Thus,

M(-3, -2) ⟶ M'(0, 2)

N(-1, 4) ⟶ N'(2, 8)

P(2, 4) ⟶ P'(5, 8)

Q(4, -2) ⟶ Q'(7, 2)

Your quadrilateral is a trapezoid. Both MNPQ and its image M'N'P'Q' are shown in the Figure below.

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3 years ago

For the two right triangles above, explain why a/8=x/12 . What trigonometric ratio is also equal to the two given ratios?

frutty [35]

Answer:

sin trigonometry ratio

Step-by-step explanation:

Given

See attachment for triangles

Required

Explain why $\frac{a}{8} = \frac{x}{12}$

From the attached diagram, both triangles are similar triangles because

(1) the second triangle is a dilation of the first triangle by a ratio of 1.5

i.e

$k = \frac{12}{8}$

$k = 1.5$

(2) They have angle 30 degrees, and have their right angles located at the same point

In the first triangle, the sine of 30 degrees is represented as:

$sin(30) = \frac{Opp}{Hyp}$

This gives:

$sin(30) = \frac{a}{8}$

In the second triangle:

$sin(30) = \frac{Opp}{Hyp}$

So:

$sin(30) = \frac{x}{12}$

By comparison:

$sin(30) = sin(3)$

Hence:

$\frac{a}{8} = \frac{x}{12}$

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3 years ago

8(x + 2) = 48<br> How do I solve this?

Rufina [12.5K]

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3 years ago

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