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liubo4ka [24]
3 years ago
6

Given f(x) = x - 7 and g(x) = x2 Find g({4)). g(f{4)) =

Mathematics
1 answer:
maksim [4K]3 years ago
3 0

Answer:

g({4)). g(f{4))  = 144

Step-by-step explanation:

Given f(x) = x - 7 and g(x) = x^2 Find g({4)). g(f{4)) =

g(4) = 4^2 = 16

g(f(4)) = (4 - 7)^2 = 9

g({4)). g(f{4)) =16 * 9  = 144

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Answer is 729

9x9x9 = 729
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A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he s
fredd [130]
Assuming the man works 8 hours straight without breaks:

25% is the same as 1/4 of something.

So, we just have to figure out what 1/4 (one quarter) of 8 equals.

You can think of it as a pizza cut into 8 slices. One slice is equivalent to one hour for the patrolman.

If we take away 1/2 (half) of the pizza, we have 4 slices, right? Since we start with 8 slices, half of that equals 4 slices. In other words, 50% (half) of the pizza = 4 slices.

Now, 25% (one quarter) of the pizza will equal half of what is left:

If we know that 50%=4 slices (or 4 hours), then 25% must be 2 slices (or 2 hours).

That's it! 25% of 8 hours = 2 hours.

***So, the patrolman spends 2 hours each day completing paperwork.***

Lets check our work:
We know 8 hours (or 8 slices)= 100%
(We know this because
8 slices = 1 whole pizza, or 100% of a pizza. Similarly,
8 hours = 1 whole shift or 100% of the man's shift ).

So

25% + 25% + 25% + 25% = 100%

If 100% of the mans shift = 8 hours:

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It checks out!


Hope this helps!



4 0
3 years ago
Hello please help with my question, I will give brainlyest!
lilavasa [31]

No, John is incorrect.

<h3>Correct work shown:</h3>

\sf x^2 - 6x - 7 = 0

\sf x^2 - 6x = 7

\sf x^2 - 6x  + 9= 7 + 9

\sf (x-3)^2= 16

\sf x-3=\pm \sqrt{16}

\sf x-3= \pm 4

\sf x= + 4 + 3 \quad or \quad x = -4 + 3

\sf x= 7 \quad or \quad x = -1

The correct answer should be x = 7 or x = -1

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1 year ago
A box of LED light bulbs was tested to see how long the light bulbs last. The standard deviation of the light bulb lifetime
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What are all the answers it’s har to see

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