3 years ago

How many ways are there to arrange 7 distinct red and 5 distinct blue balls in a row such that:?

Mathematics

1 answer:

BARSIC [14]3 years ago

5 0

You can change them around up to 144 times.

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Using the traditional formula, a 95% CI for p1 − p2 is to be constructed based on equal sample sizes from the two populations. F

inn [45]

Answer:

Step-by-step explanation:

Given:

Width = 0.4

Let's take the z value of 95% which is = 1.96

Let's assume population proportion p1 and p2 = 0.5

For margin of error E, the relation between the width and margin of error is 2E.

i.e 2E = 0.4

E = 0.2

To find the sample size, n, let's use the formula :

$n= \frac{z^2*(p_1(1-p_1) + p_2(1-p_2))}{E^2}$

$= \frac{1.96^2(0.5(1-0.5)+0.5(1-0.5))}{0.2^2}$

= 48.02

≈ 49

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3 years ago

Consider an angle with a measure of θ=225∘.

wel

Answer:

cos 225° = $-\frac{\sqrt{2} }{2}$

sin 225° = $-\frac{\sqrt{2} }{2}$

tan 225° = 1

Step-by-step explanation:

I cannot sketch a diagram, but a 225° angle is a 3rd quadrant angle and the reference angle is 45° (225 - 180 = 45)

cos and sin are negative in the 3rd quadrant and the tan is positive

cos 225° = - cos 45° = $-\frac{\sqrt{2} }{2}$

sin 225° = -sin 45° = $-\frac{\sqrt{2} }{2}$

tan 225° = tan 45° = 1

8 0

2 years ago

Find the area of the following figure. get brainliest if correct<3

Alexus [3.1K]

Answer:

312

Step-by-step explanation:

because when you add the triangles and rectangles together you get 312

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2 years ago

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What is 23,356.4739 rounded to the nearest whole number

nikitadnepr [17]

23,356 the answer rounded to nearest whole number

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3 years ago

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Angelina needs 468 yards of ribbon to decorate quilts for a craft fair. The ribbon comes in rolls of 32 yards. How many rolls of

borishaifa [10]

Answer:

well you need to divide 468 by 32

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2 years ago