2 years ago

What is the vertex of x2 + 8x + 12?

Mathematics

1 answer:

gregori [183]2 years ago

8 0

Answer:

(-4,-4)

YW :))

Or you could of just looked it up cause thats what I did!!

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If a 50 g bar is 260 calories. How many calories would this 75g King Size bar have?

RSB [31]

Answer:

390 calories

Step-by-step explanation:

Divide 260 and 50, to find how much calories are in 1 gram.

260/50=5.2

1 gram=5.2 calories.

Now multiply 75 with 5.2 to find how many calories are in 75 g.

75 x 5.2=390

<u>Final answer</u>

390 calories

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3 years ago

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A paint mix uses red and white paintin a ratio of 1:12.

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2 years ago

Solve the linear equation 1/5(10x-20)=x-3

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x=1

Step-by-step explanation:

1/5(10x-20)=x-3

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Steven got a one time $90 bonus. He got paid $330. How much did he make before his bonus?

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Step-by-step explanation:

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3 years ago

An equation of an ellipse is given. y2 = 1 − 3x2 (a) Find the vertices, foci, and eccentricity of the ellipse. vertex (x, y) = (

oksian1 [2.3K]

Answer:

Step-by-step explanation:

Given

$y^2=1-3x^2$

$3x^2+y^2=1$

$\frac{x^2}{(\frac{1}{\sqrt{3}})^2}+\frac{y^2}{1}=1$

therefore it is a vertical ellipse

thus a=1

$b=\frac{1}{\sqrt{3}}$

eccentricity of Ellipse

$e^2=1-\frac{b^2}{a^2}$

$e^2=1-\frac{1}{(\sqrt{3})^2}$

$e^2=1-\frac{1}{3}$

$e^2=\frac{2}{3}$

$e=\sqrt{\frac{2}{3}}$

Focii are $(0,ae)$ and $(0,-ae)$

$ae=1\times \sqrt{\frac{2}{3}}$

thus focii are $(0,\sqrt{\frac{2}{3}})$ & $(0,-\sqrt{\frac{2}{3}})$

(b) Length of major axis $=2a=2\times 1$

length of minor axis $=2b=2\times \sqrt{\frac{2}{3}}=2\cdot \sqrt{\frac{2}{3}}$

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3 years ago