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3 years ago

What is the equation for this parabola (located above) in vertex form?

Mathematics

1 answer:

riadik2000 [5.3K]3 years ago

6 0

Answer:

f(x)=x²-2x-2

Step-by-step explanation:

f(x)=ax²+bx+c

f(0)=-2 => c= -2

f(1)= -3=> a+b-2=-3; a+b=-1

f(2)= -2; 4a+2b-2=-2; 4a+2b=0; 2a+b=0

a+b=-1 and 2a+b=0

2a+b-(a+b)=0+1=> a=1

2+b=0=> b=-2

f(x)=x²-2x-2

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Answer:

Step-by-step explanation:

11=t+11.5-t

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2 years ago

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2 years ago

An in-ground pool is 34 feet long and x inches wide. Its brick walkway is 4 feet wide around the pool. What expression represent

bagirrra123 [75]

Answer:

$A_w=8x+336$

Step-by-step explanation:

From the question we are told that:

Length of pool $l_p=34$

width of pool $w_p=x$

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Generally the equation for Area of the pool $A_b$ is mathematically given by

$A_p=l_p*w_p\\\\A_p=34*x$

Generally the equation for Area of the pool with its walkway $A_w'$ is mathematically given by

$A_w'=l_w'+w_w'\\\\A_w'=l_w'+w_w'$

Where

$l_w'=length\ of\ pool\ with\ walkway\\\\l_w'=l_p+4+4\\\\l_w'=34+4+4\\\\l_w'=42$

Therefore

$w_w'=width\ of\ pool\ with walkway\\\\w_w'=w_p+8\\\\A_w'=42*(x+8)$

Generally the equation for pool's walkway $A_w$ is mathematically given by

$A_w=A_w'-A_p\\\\A_w=(42*(x+8))-(34x)$

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3 years ago

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Answer:

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Step-by-step explanation:

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