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3 years ago

What is the surface area of a cube that has a side length of 8 mm?

Mathematics

2 answers:

elena-14-01-66 [18.8K]3 years ago

8 0

Answer:

384 sq mm

Step-by-step explanation:

Formula : 3.84×10-4

nikklg [1K]3 years ago

6 0

Surface area of a cube = 6l²

Now given length = l = 8 mm

= 6*8² = 6*64 = 384 mm².

Thank you !!

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Which two values of x are roots of the polynomial below?<br> 3x2-3x+1

QveST [7]

Answer:

The roots are

$x=\frac{1}{6} [3+ i\sqrt{3}]$

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Step-by-step explanation:

we have

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$ax^{2} +bx+c=0$

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$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$3x^2-3x+1=0$

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Remember that

$i=\sqrt{-1}$

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6 0

3 years ago

3. Use the polynomial 12x^4 y^2 + 30x^3 y to answer the following questions?

barxatty [35]

Answer:

$\huge\boxed{GCF:6x^3y}$

$\huge\boxed{Factored: 6x^3y(2x+5)}$

Step-by-step explanation:

Look at both terms separately, and isolate each "part."

i.e. 12x^4y^2 becomes 12, x^4, y^2

So the problem becomes:

12, x^4, y^2 and

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Then, find the GCF of each term,

30 and 12 - 6

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y^2 and y^1 - y^1

Hope it helps :) and let me know if you want me to elaborate.

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2 years ago

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Inessa [10]

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3 years ago