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Kay [80]
2 years ago
5

Which of the following functions best represents the graph?

Mathematics
2 answers:
Allushta [10]2 years ago
7 0

Answer:

B. f(x)=x³+x²-x-1

Step-by-step explanation:

The value of the graph f(x) shows that at x=1 and x=-1 must yield f(x)=0

which is true in case B.

A. f(1)=1+1-4-4= -6≠0

C. f(1)= 1+3-4-12=-12≠0

D.  f(-1)= -1+2+2-1= 2≠0

Hence, option B is correct

i.e. f(x)=  x³+x²-x-1

Leviafan [203]2 years ago
4 0
I believe the answer is B.
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Answer:

The amount that Obi initially had was £20

Step-by-step explanation:

Let

x ----> amount that Obi initially has

y ----> amount that Rudy has

we know that

\frac{x}{y} =\frac{5}{2}

x=2.5y ----> equation A

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y=x-20+8

y=x-12 ----> equation B

Solve the system by substitution

substitute equation A in equation B

y=(2.5y)-12

solve for y

2.5y-y=12\\1.5y=12\\y=8

Find the value of x

x=2.5(8)=20

therefore

The amount that Obi initially had was £20

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3 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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