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Tom [10]
3 years ago
7

Use the following information to answer the next six exercises. There are 23 countries in North America, 12 countries in South A

merica, 47 countries in Europe, 44 countries in Asia, 54 countries in Africa, and 14 in Oceania (Pacific Ocean region). Let A = the event that a country is in Asia. Let E = the event that a country is in Europe. Let F = the event that a country is in Africa. Let N = the event that a country is in North America. Let O = the event that a country is in Oceania. Let S = the event that a country is in South America. What is the sum of the probabilities of an event and its complement?
Mathematics
1 answer:
motikmotik3 years ago
6 0

Answer:

nosee la verdad

Step-by-step explation

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Gwar [14]
The answer is D. I’m assuming this is surface area so here’s my explanation:) ok so the area of the triangle is 6 (4x3 divided by 2) and when you add the other triangle that’s 12. Ok so we have 12 so far. Then the area of the bottom rectangle is 24 (3x8). Then the area of the side rectangle is 32 (4x8). THEN the top rectangle’s area is 40 (8x5). When you add the numbers up (12+24+32+40) you get 108! And of course dont forget the cm2. ( centimeters squared ). :) I hope this helps
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Alenkinab [10]
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3 years ago
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Help me with the first step
grandymaker [24]
First find the area of the triangle: (4 x 6) ÷ 2 = 12
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4 0
4 years ago
The sales tax on the price of a futon is $37.68. If the tax is 8%, find the purchase price of the futon.
Brilliant_brown [7]

Answer:

The answer is: $471

Step-by-step explanation:

Set up two ratios and cross multiply:

8 / 100 = 37.68 / x

8x = 37.68 * 100

8x = 3768

x = 3768 / 8 = $471.00

Proof:

$471 * .08 = $37.68

3 0
4 years ago
Which complex number has a distance of 17 from the origin on the complex plane?
Virty [35]

Answer:

None of the options are correct.

Step-by-step explanation:

Let the complex number is a + ib

Given distance from origin = 17 units

Now, by distance formula distance of a point  from the origin  =

17 = \sqrt{(x)^{2}  + (y)^{2} }

1) <u>Check for 2 + 15 i</u>

here, \sqrt{15^2  +  2^2}  = \sqrt{225 + 4} = \sqrt{229} ≠ 17

2)<u> Check for 17 +  i</u>

here, \sqrt{17^2  +  1^2}  = \sqrt{289 + 1} = \sqrt{290}≠ 17

3)<u> Check for 20 - 3 i</u>

here, \sqrt{20^2  +  (-3)^2}  = \sqrt{400 + 9} = \sqrt{409}≠ 17

4) <u>Check for 4 -  i</u>

here, \sqrt{4^2  +  (-1)^2}  = \sqrt{16 + 1} = \sqrt{17} ≠ 17

Hence,  none of the options are correct.

4 0
4 years ago
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