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luda_lava [24]
3 years ago
7

PLZ HELP, 20 pts and brainliest awarded, plz ASAP!!!!!! see image below

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
8 0

Answer:

Option B

Step-by-step explanation:

we have

f(x)=x^{3}-x^{2}-9x+9

we know that

<u>The vertical line test </u>is a visual way to determine if a curve is a function or not. A function can only have one value of y for each unique value of x

In this problem

The given function  passes the vertical line test

therefore

f(x) is a function

<u>The Horizontal Line Test</u>  is a test use to determine if a function is one-to-one

If a horizontal line intersects a function's graph more than once, then the function is not one-to-one.

In this problem

The given function fails the horizontal line test

because for f(x)=0 x=-3, x=-1, x=3

therefore

It is no a one-to-one function

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Answer:

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3 years ago
Find the area of the regular decagon if the apothem is 2.8ft and a side is 1.8ft
geniusboy [140]
DECA=10, decagon = 10 sides.

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3 years ago
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KiRa [710]
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4 0
3 years ago
If Gloria were to paint her living room alone, it would take 4 hours. Her sister Angela could do the job in 6 hours. How many ho
Aleksandr-060686 [28]

Answer:

2 hours and 24 minutes

Step-by-step explanation:

1/6 + 1/4 = 2/12 + 3/12 = 5/12

5/12 = 1/x

5/12x = 1

5x = 12

x = 2.4

2 hours, 24 minutes

4 0
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