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Sonbull [250]
3 years ago
10

Simplify the polynomial then evaluate for x=-1 3x^2-4+2x-1+x^2

Mathematics
1 answer:
yuradex [85]3 years ago
7 0

Answer:

-3

Step-by-step explanation:

Simplified polynomial: 4x^2 + 2x - 5

Plug in -1: 4(-1)^2 + 2(-1) - 5

= -3

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Hellppp pleaseeee
stiks02 [169]

Answer:

Volume of cylinder is 953.77 cm³ and volume in term of π is  303.75π

Step-by-step explanation:

Given: Diameter is 9 cm

           Height is 15 cm.

First lets find out the radius of cylinder.

As given, diameter is 9 cm

we know, radius= \frac{diameter}{2}

Radius= \frac{9}{2} = 4.5\ cm

Now, finding the volume of the cylinder.

Formula; Volume of cylinder= \pi r^{2} h

where r is radius and h is height of cylinder.

⇒ Volume of cylinder= \pi \times 4.5^{2} \times 15

⇒Volume of cylinder= \pi \times 20.25\times 15

⇒Volume of cylinder= 303.75\pi

Taking π = 3.14

⇒ Volume of cylinder= 303.75\times 3.14

⇒ Volume of cylinder= 953.77 cm³

Hence, volume of cylinder is 953.77 cm³ and volume in term of π is  303.75π.

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