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o-na [289]
3 years ago
13

What is the maximum value of f(x)=−4x2+4x−2?

Mathematics
1 answer:
horrorfan [7]3 years ago
5 0

Answer: -1

Step-by-step explanation: A typical quadratic equation is ax^{2} +bx+c and the maximum value formula is -b/2a, so let plug it in -4/2(-4) which equals 1/2. Then let plug 1/2 into the equation,

-4(1/2)^2+4(1/2)-2=

    -1+2-2=

          -1

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Lynna [10]

Answer:

x=-2, y=-3

Step-by-step explanation:

we can rearrange the questions to make it easier

y=3x+3

2y=-3x-12

if you add the two equations, you get

3y=0x-9

so y=-9/3 = -3

plug y into one of the equations

-3=3x+3

-6=3x

x=-2

and then check your work by plugging into the other equation:

2*-3=-3(-2)-12

-6=6-12

-6=-6

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3 years ago
What is the value of f(-3)
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f(x)=\left\{\begin{array}{ccc}-2&if&x < -3\\4x&if&-3\leq x\leq-1\\x^2&if&x > -1\end{array}\right\\\\-3\leq-3\leq-1\to f(x)=4x\\\\f(-3)=4(-3)=-12

8 0
3 years ago
Simplify this! ez points
Jobisdone [24]

Answer:

56.25

Step-by-step explanation:

4 0
3 years ago
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The ratio of the heights of two similar prymaids is 3:2
Charra [1.4K]
What is the question?

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5. A video store charges a monthly
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12 + 1.50x = 3x

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12 = 1.50x

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Check:

3(8)= 24

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