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3 years ago

Which expression is equivalent to (x2 − 8) − (−2x2 + 4)?

Mathematics

1 answer:

umka21 [38]3 years ago

5 0

Answer:

the answer is D. mark me brainliest if im correct.

Step-by-step explanation:

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Will give 15 points and brainliest

pentagon [3]

Answer:

1331π cm³

Explanation:

$\sf V_{cylinder} = \pi (radius)^2 (height)$

Here given:

radius: 11 cm
height: 11 cm

Hence find volume:

$\sf \rightarrow\pi (11)^2 (11)$

$\sf \rightarrow 121\pi ( (11)$

$\sf \rightarrow 1331\pi \quad \approx \:\:\ 4181.46 \ cm^3$

4 0

1 year ago

Read 2 more answers

The object below is made of solid plastic. It is a cylinder with an indentation at the top in the shape of a cone. What is the v

Anastasy [175]

Answer:

97.6 cm³

Step-by-step explanation:

Volume of plastic object :

Volume of cylinder - volume of cone

From. The diagram. :

Radius, r = diameter /2 = 4/2

Volume of cylinder = pi*r²h

V = 22/7 * 2² * 8 = 100.53096 cm³

Volume of cone = 1/3*pi*r²h

V = 1/3 * 22/7 * 2² * 8

V = 2.9321531 cm³

(100.53096 - 2.9321531) cm³

= 97.598 cm³

= 97.6 cm³

5 0

3 years ago

I got 12 will someone double check me please? No links I can’t open them

Vedmedyk [2.9K]

Answer:

the first 6⅔

Step-by-step explanation:

in the image

4 0

3 years ago

Which expression is equivalent to 64x^3-343

In-s [12.5K]

Answer:

B: (4x - 7)(16x^2 + 28x + 49)

Step-by-step explanation:

64x^3-343 can be rewritten as 4^3x^3 - 7^3 or (4x)^3 - 7^3. This is the difference of two cubes. The appropriate formula for factoring such is

a^3 - b^3 = (a - b)(a^2 + ab + b^2). Therefore,

our (4x)^3 - 7^3 = (4x - 7)(16x^2 + 28x + 49). This is Answer B.

4 0

3 years ago

Can someone tell me the points on a graph when you graph y=-5x

kap26 [50]

Answer:

pls give me brainliest

Step-by-step explanation:

7 0

3 years ago