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2 years ago

X = b - cd, solve for c

1 answer:

5 0

When they say to solve for c, they just want you to isolate it. We can start by subtracting b from both sides to give us:

x - b = cd

After this, we can divide both sides by -d to finish isolating the variable c; remember that -cd is -1(c)(d):

$\frac{x-b}{-d}$ = c

Therefore, c = $\frac{x-b}{-d}$

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Find vertex of: y=(x-4)(x+8)

ki77a [65]

Answer:

(-2,-36)

Step-by-step explanation:

$y=(x-4)(x+8)$

1) Find the zeros of the parabola

The zero-product property states that any value, when multiplied by 0 will equal 0. Therefore, to make y=0, either (x-4)=0 OR (x+8)=0.

Therefore, x=4 and x=-8.

2) Find the x-coordinate of the vertex

To do this, we take the average of our zeros.

$\frac{4+(-8)}{2} \\=\frac{-4}{2} \\=-2$

Therefore, the x-coordinate of the vertex is -2.

3) Find the y-coordinate of the vertex

Plug the x-coordinate back into the original equation

$y=(-2-4)(-2+8)\\y=(-6)(6)\\y=-36$

Therefore, the y-coordinate of the vertex is -36.

Therefore, the vertex of the parabola is (-2,-36).

I hope this helps!

6 0

3 years ago

So Alex is selling a very rare spice that costs $100 per gram. Someone wants to buy $80 worth of the spice. How much spice (in g

Alika [10]

80% of a gram.
One gram is $100, aka $100 is 100% of a gram, so $80 would be 80% of a gram.

7 0

2 years ago

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If the bookshelf is 51 inches tall how tall Is it in feet

tangare [24]

The bookshelf would be 4 feet 3 inches.

3 0

3 years ago

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How do u estimate ur answer

Nostrana [21]

So basically to estimate your answer, you must

3 0

3 years ago

Fraction that is smaller than -2^1^3

lapo4ka [179]

Isn't it 1/8?
I hope this helped i think i just simplified xD

7 0

3 years ago