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miv72 [106K]
3 years ago
11

HELP NEED ASAP FOR MY HOMEWORK ITS DUE TOMORROW!! WILL MARK BRAIBLIEST IF RIGHT!! is 0 in domain or not? is 5 in domain or not?

is 10 in domain or not?​

Mathematics
1 answer:
AlekseyPX3 years ago
3 0

Answer:

0 and 5 are not in the domain. 10 is.

Step-by-step explanation:

if we do \sqrt{0 - 10}, then we get \sqrt{-10}, and you can't square root a negative number. The same goes for 5 as well, if we do 5 - 10, then we get \sqrt{-5}, and we can't square root a negative number.

However, if we do 10, then we get \sqrt{0}, which we can do.

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<h3>No, the cost of 1 adult ticket cannot be $ 20 and the cost of 1 children ticket is not $ 8.</h3>

Step-by-step explanation:

Let us assume the cots of ticket for 1 adult  = $ x

Let us assume the cots of ticket for 1 children  = $ y

So, the cost of ticket for 3 adults = 3 x ( Cost of 1 adult ticket) =  3 x

The cost of ticket for 3 children  = 3 x ( Cost of 1 children ticket)  =  3 y

Also, given the combined cost of 3 adult and children ticket is less than $75.

⇒  3 x +  3  y < 75  ... (1)

Similarly,  the cost of ticket for 2 adults = 2 x

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⇒  2 x +  4  y < 62  ... (2)

Now, solving for the values of x and y, we get:

3 x + 3 y < 75 or, x + y < 25   ⇒ x = 25 - y ( substitute in 2)

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⇒   25  - y + 2 y < 31

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or, y < 6

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or, x < 19

So, the cost of 1 adult ticket  is x and is less than $19.

The cost of 1 child ticket  is y  and is less than $6.

Hence, by above statement, NO the cost of 1 adult ticket  can not be $ 20 and the cost of 1 children ticket is not $ 8.

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