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2 years ago

X = 3y-9 Solve for y, now i need a refresher on this mind helping me?

Mathematics

1 answer:

Gala2k [10]2 years ago

5 0

Answer:

Is this all? You can’t obtain a number value for y, but you can obtain that y equals (9+X)/3

Step-by-step explanation:

X=3y-9

Distribute the right hand side.

3y-9=3(y-3)

Therefore,

X=3(y-3)

Divide both sides by 3

(X/3)=y-3

Add 3 to both sides

(X/3)+3=y

Simplify

(X/3)+(9/3)=y

y=(9+X)/3

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In the xy-plane, the graph of function f(x) has zeros at −5, −2, and 2. Write the polynomial function.

Alona [7]

Answer:

$f(x) = x^3 +5x^2-4x-20$

Step-by-step explanation:

Given

$Zeros: -5,-2,2$

Required

The polynomial function

If a function has a, b and c as its zeros, the function is:

$f(x) = (x - a)(x - b)(x - c)$

So, we have:

$Zeros: -5,-2,2$

$f(x) = (x - (-5))(x - (-2))(x - 2)$

Open the inner brackets

$f(x) = (x +5)(x +2)(x - 2)$

Expand the difference of two squares

$f(x) = (x +5)(x^2 - 4)$

Expand

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3 years ago

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3 years ago

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Answer :

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2 years ago

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