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3 years ago

Someone please help me I need it

Mathematics

1 answer:

umka21 [38]3 years ago

4 0

When x = -1, y = - 3 ((-1)^2-4)

When x = 0, y = -4 ((0)^2-4)

When x = 5, y = 21 ((5)^2-4)

When x = 13 y = 165 ((13)^2-4)

You just substitute the values of X into the equation

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X/2 - 5 = 10 what does x equal?

Viefleur [7K]

Answer:

x=30

Step-by-step explanation:

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3 years ago

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the cost of jeans is $55.56. choose the value that produces a mark down A.)$54.32. B.)$75.40 C) $57.49 D)$55.70

Alona [7]

I would say A.$54.32 because it is the only option that is less than 55.56

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3 years ago

A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm. Calculate the volume of

never [62]

Answer:

The volume of a cylinder is 62.8 cm and the volume of a cone is 20.9 cm³ .

Step-by-step explanation:

Formula

$Volume\ of\ a\ cylinder = \pi r^{2} h$

$Volume\ of\ a\ cone = \pi r^{2} \frac{h}{3}$

Where r is the radius and h is the height .

As given

A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm.

$\pi = 3.14$

Thus

$Volume\ of\ a\ cylinder =3.14\times 5\times 2\times 2$

= 62.8 cm³

Thus the volume of a cylinder is 62.8 cm³ .

$Volume\ of\ a\ cone = 3.14\times 2\times 2\times frac{5}{3}$

$Volume\ of\ a\ cone =\frac{5\times 3.14\times 2\times 2}{3}$

$Volume\ of\ a\ cone =\frac{62.8}{3}$

= 20.9 (Approx) cm³

Thus the volume of a cone is 20.9 cm³ .

Therefore the volume of a cylinder is 62.8 cm and the volume of a cone is 20.9 cm³ .

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3 years ago

What’s the inverse of y=100-x^2

erastova [34]

$y=100-x^2\ \ \ |+x^2\\\\y+x^2=100\ \ \ |-y\\\\x^2=100-y\\\\x=\sqrt{100-y}\\\\\text{Answer:}\ y^{-1}=\sqrt{100-x}$

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3 years ago

Please Help!!! 25 points!

julia-pushkina [17]

Answer: B/E

Step-by-step explanation:

Because the reciprocal are congruent to both sides

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