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3 years ago

What is the percent of change from 50 to 23?

Mathematics

2 answers:

Taya2010 [7]3 years ago

7 0

Answer:

50 is the old value and 23 is the new value. In this case we have a negative change (decrease) of -54 percent because the new value is smaller than the old value. Using this tool you can find the percent decrease for any value.

Alekssandra [29.7K]3 years ago

5 0

Yea what he said atop

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Show that (A | B) U (B \ A) = (AUB) \(B n A).

trasher [3.6K]

Answer:

We have to prove,

(A \ B) ∪ ( B \ A ) = (A U B) \ (B ∩ A).

Suppose,

x ∈ (A \ B) ∪ ( B \ A ), where x is an arbitrary,

⇒ x ∈ A \ B or x ∈ B \ A

⇒ x ∈ A and x ∉ B or x ∈ B and x ∉ A

⇒ x ∈ A or x ∈ B and x ∉ B and x ∉ A

⇒ x ∈ A ∪ B and x ∉ B ∩ A

⇒ x ∈ ( A ∪ B ) \ ( B ∩ A )

Conversely,

Suppose,

y ∈ ( A ∪ B ) \ ( B ∩ A ), where, y is an arbitrary.

⇒ y ∈ A ∪ B and x ∉ B ∩ A

⇒ y ∈ A or y ∈ B and y ∉ B or y ∉ A

⇒ y ∈ A and y ∉ B or y ∈ B and y ∉ A

⇒ y ∈ A \ B or y ∈ B \ A

⇒ y ∈ ( A \ B ) ∪ ( B \ A )

Hence, proved......

7 0

3 years ago

If you had a choice between playing golf or going to the movies and you chose to go to the movies, what is the opportunity cost

Mice21 [21]

The potential gain that could have come with golfing

Step-by-step explanation:

Opportunity cost is the loss of something you could have gotten from the choice you didn't go with. so I'm this case, the opportunity cost of chosing the movies is what you missed out on by not going golfing.

5 0

2 years ago

Which inequality describes this graph?

Mashcka [7]

The picture isn’t visible it’s a black screen

7 0

3 years ago

1. Tom thought of a natural number, multiplied all its digits and after that he multiplied the result by the initial number. Is

mihalych1998 [28]

Answer:

1. No

2. 7

3. b=54

Step-by-step explanation:

1. We can answer this by assuming a number.

Let our number be 23

Multiplying its digits = 6

Multiplying the result with initial number = 6 * 23 = 138

So it is not possible to get 1716 as a result by thinking of a natural number and applying the operation mentioned in the question.

2. What is the largest prime factor of the factorial 49! ?

First of all we have to define prime factors:

Prime factors are the prime numbers that can be multiplied together to equal the original number.

The factors of 49 are: 1, 7, 49

7 is the largest prime factor of 49

3. The GCD(a, b) = 18, LCM(a, b) = 108. If a=36, findb.

We will use the relationship:

$GCD * LCM = a*b\\18*108=36b\\1944=36b\\b= \frac{1944}{36} \\b=54$

8 0

2 years ago

Mark says, '81 is a square number. Therefore, 810 is a square number.'

AlladinOne [14]

Answer:

Mark is not correct , becouse squared number Is number which can be after "=" when you times same numbers for example: 4*4=16 so 16 is squared number,is this make sense?

4 0

1 year ago

Read 2 more answers