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fomenos
3 years ago
8

If one side of a square notebook measures 20 cm, what is the area of the front cover of the notebook?

Mathematics
2 answers:
jarptica [38.1K]3 years ago
6 0

Answer:

400 cm squared

Step-by-step explanation:

Since a square has all equal sides, this would mean the the all the other sides are 20 as well. To get the area, you would just multiply 20 by 20 to get 400. :)

Murrr4er [49]3 years ago
3 0

Answer:

D. 400 centimeters squared

Step-by-step explanation:

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5•8=40•2=80+(8•8)=144
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3 years ago
Hey I need these by 8am or I'm screwed,
tiny-mole [99]
34.4 / 4 = 8.6 

The value 214.01 is greater.

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3 M = 300 CM
4 M = 400 CM
5 M = 500 CM
6 M = 600 CM
7 M = 700 CM

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Step-by-step explanation:

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3 years ago
Where is -2 1/2 at on a number line
Lubov Fominskaja [6]

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8 0
3 years ago
Kind people!help me please...And a detailed solution/THANKS<br> sin^2x-0,5sin2x=0
Volgvan

This will be easier to write, and a lot easier to read, if we temporarily
use another symbol ... say, 'Q' ... to represent  ' sin(2x) ' .
Here we go:

Original equation:                Q² - 0.5 Q  =  0

Factor the left side:            Q (Q - 0.5)  =  0

This equation is true if either factor is zero:


--  If  Q=0, then  sin(2x) = 0

                                 2x = 0°,  180°,  360°

                                   x = 0°,  90°,  180°


-- If  (Q-0.5) = 0, then      Q  =  0.5

                                sin(2x)  =  0.5          

                                       2x  =  30°,  150°

                                         x  =  15°,  75°


The whole collection of solutions
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          x = 0°,  15°,  75°,  90°,  180° .

8 0
3 years ago
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