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2 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]2 years ago

8 0

Answer:

384 sq mm

Step-by-step explanation:

Formula : 3.84×10-4

nikklg [1K]2 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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I need the answer please

Veseljchak [2.6K]

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3 years ago

If a construction work digs down to 30 feet below the surface of the ground. What is her elevation?

tresset_1 [31]

Answer:

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Step-by-step explanation:

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2 years ago

What two numbers add to 9 and multiply to -70

Alborosie

X, y - the numbers

The numbers add to 9 and multiply to -70.
$x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
9x-x^2=-70 \\
-x^2+9x+70=0 \\
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-x(x-14)-5(x-14)=0 \\
(-x-5)(x-14)=0 \\
-x-5=0 \ \lor \ x-14=0 \\
x=-5 \ \lor \ x=14 \\ \\
y=9-x \\
y=9-(-5) \ \lor \ y=9-14 \\
y=14 \ \lor \ y=-5 \\ \\
(x,y)=(-5,14) \hbox{ or } (x,y)=(14,-5)$

The numbers are -5 and 14.

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2 years ago

Please help!!!!!! I’ll mark Brainlyist!!!!!

Butoxors [25]

Answer:

its 55

Step-by-step explanation:

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2 years ago

Read 2 more answers

Solve 8X-3 = -19 + 6x*<br> 0<br> Your answer

madreJ [45]

Step-by-step explanation:

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8x - 6x = - 19 + 3

2x = - 16

x = - 16 /2

x = - 8

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3 years ago