Simplify the expression: -l-4 l

1 answer:

7 0

The | | means absolute value

So, any negative or positive number in absolute value will ALWAYS come out positive.

|-4| = 4

But that's only half the question.

- |-4| = - (4) = -4

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What is the vertex of the function?

egoroff_w [7]

<h2>Explanation:</h2><h2></h2>

Here you haven't provided any function, so I'll assume this one:

$f(x)=3x^2-18x+33$

This is a quadratic function whose graph represents a parabola. Any parabola has its vertex at the point:

$V(x,y) \\ \\ \\ x=-\frac{b}{2a} \\ \\ y=f(-\frac{b}{2a}) \\ \\ \\ where: \\ \\ \\ f(x)=ax^2+bx+c \\ \\ \\ So: \\ \\ a=3 \\ \\ b=-18 \\ \\ c=33$

Therefore:

$x=-\frac{(-18)}{2(3)}=3 \\ \\ f(3)=3(3)^2-18(3)+33=27-54+33=6$

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3 years ago

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Vilka [71]

The answer is (2,0)

Explanation

So I’m gonna use substitution to help me solve this problem. I’m gonna solve for x.

X-y=2

+y. +y

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Now that we have solved for x we are going to plug it into the first equation!
Shown like this

Y+2 - 10y = 2

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Easy

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Answer:

u can use a calculator

Step-by-step explanation:

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3 years ago

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