3 years ago

Give me answer please now

Mathematics

1 answer:

viktelen [127]3 years ago

3 0

1. 4

2. 14

should be correct

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3 years ago

50 apples cost $25 how much would 75 apples cost?

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4 years ago

How many elements are in the union of four sets if

12345 [234]

Answer:

Step-by-step explanation:

Let A, B, C and D sets.

Let |A| the number of elements of A.

Remember, the quantity of elements that have the set $A\cup B\cup C\cup D$ is

$|A\cup B\cup C\cup D|=|A|+ |B|+ |C|+|D|-|A\cap B|-|A\cap C|-|A\cap D|-|B\cap C|-|B\cap D|-|C\cap D|-|A\cap B\cap C|-|A\cap B\cap D|-|B\cap C\cap D|-|A\cap B\cap C \cap D|$

1. Since each set has 100 elements,

2. each pair of the sets shares 50 elements

3. each three of the sets share 25 elements,

4. the four sets share 5 elements

Then

$|A\cup B\cup C\cup D|=100+100+100+100-50-50-50-50-50-50-25-25-25-5=20$

So, there are 20 elements in the union of the sets A, B, C and D

6 0

3 years ago

Ill give brainiest to, whom ever gets this correct.

Dovator [93]

Answer:

50.2 m^2

Step-by-step explanation:

The Area of a circle is given by the equation pi(r)^2

Therefore if r = 4 we can plug it into the equation to get:

pi (4)^2
= pi(16)
= 50.2655 or about 50.2 m^2

3 0

3 years ago

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