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aksik [14]
2 years ago
14

A shirt that regularly sells for $20 is marked down by 30%. What is the new price of the shirt?

Mathematics
2 answers:
Law Incorporation [45]2 years ago
7 0

Answer:

$14

Step-by-step explanation:

30% -> 0.3

20 x 0.3 = 6

20 - 6 = 14

The new price of the shirt will be 14 dollars.

Hope this helps, have a nice day :D

7nadin3 [17]2 years ago
4 0

$14

Step-by-step explanation:

30% × 20

= 30/100 × 20

= 600/100

= $6

The new price of the shirt :

$20 - $6

= $14

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If the function f (x) has a domain of (a,b] and a range of [c,d), then what is the domain and range of g (x) = m × f (x) + n?
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<h3>Answer: Choice A</h3>

Domain = (a,b]

Range = [mc + n,md + n)

==============================================

Explanation:

The domain stays the same because we still have to go through f(x) as our first hurdle in order to get g(x).

Think of it like having 2 doors. The first door is f(x) and the second is g(x). The fact g(x) is dependent on f(x) means that whatever input restrictions are on f, also apply on g as well. So going back to the "2 doors" example, we could have a problem like trying to move a piece of furniture through them and we'd have to be concerned about the f(x) door.

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The range will be different however. The smallest value in the range of f(x) is y = c as it is the left endpoint. So the smallest f(x) can be is c. This means the smallest g(x) can be is...

g(x) = m*f(x) + n

g(x) = m*c + n

All we're doing is replacing f with c.

So that means mc+n is the starting point of the range for g(x).

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Answer:

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t = time

So, the average boy grows approximately 2 5/8 inches in a year.

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\hat q = 2 \dfrac{5}{8} \ in/yr

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The height of the son as a function of the age can now be expressed as:

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Monique son will be 8 years at the time Monique is 50 inches tall.

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