3 years ago

A number x decreased by 3 is 5.

Mathematics

1 answer:

kondaur [170]3 years ago

4 0

Answer:

Step-by-step explanation:

X=8 bc 8-3=5

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Answer:

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3 years ago

Order the group of parabolas from widest to narrowest.

Mamont248 [21]

Answer:

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Step-by-step explanation:

The equation of a parabola: y = ax²

The larger the value of |a|, the narrower the parabola.

We have the following coefficients a:

$\left|\dfrac{1}{4}\right|=\dfrac{1}{4},\ \left|-\dfrac{1}{2}\right|=\dfrac{1}{2},\ \left|\dfrac{3}{2}\right|=\dfrac{3}{2},$

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$\dfrac{1}{4}\$

Therefore you have the answer:

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3 years ago

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Marianna [84]

Answer:

It is given that the volume of a cone = $3\pi x^3$ cubic units

Volume of cone with radius 'r' and height 'h' = $\frac{1}{3}\pi r^2h$

Equating the given volumes, we get

$3\pi x^3=\frac{1}{3}\pi r^2h$

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It is given that the height is 'x' units.

Therefore, $r^2x=9x^3$

$r^2=9x^2$

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