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cupoosta [38]
2 years ago
11

PLEASE ANSWER ASAP + BRAINLIEST!!!!

Mathematics
1 answer:
alekssr [168]2 years ago
8 0

Answer:

+-1/4

Step-by-step explanation:


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A cube has a surface area of 486 cm2. What is the side length ?
astraxan [27]
A Cube, has all equal sides, namely, the length, width and height
are all equal to each other

so..  notice the picture added here
you have really, 6 squares, stacked up to each other at the edges

so...what is the Area of one of those squares?
well, if the sides are equal, let's say the side is "x" long, then
the Area is x\cdot x \implies x^2

well, you have 6 of those squares, thus \bf \textit{surface area of a cube}=
\begin{cases}
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)\\
 --------------\\
 x^2+x^2+x^2+x^2+x^2\\
6x^2
\end{cases}
\\\\
\textit{we know the Area is }486\ cm^2\qquad thus
\\\\
\textit{surface area}=6x^2\implies 486=6x^2

solve for "x", to get one side's length

3 0
3 years ago
Please need help fast. Look at the picture.<br><br> Please explain.
Sidana [21]

Answer:

1

Step-by-step explanation:

  1. KN = 3
  2. IK = -2
  3. 3 + -2 = 3 - 2
  4. 3 - 2 = 1

I hope this helps!

6 0
2 years ago
What is the Value of x in the figure below in this diagram ABD ~ CAD
Sliva [168]

Answer:

Step-by-step explanation:

7 0
1 year ago
Slope is 5, (5,4) is on the line <br> The equation of the line is y=
viktelen [127]
Solve the equation 4= 5(5) + b
To get b
I got the equation by plugging in the slope and point into the y=Mx+b formula.
Hope this helps:)
6 0
2 years ago
Even though Tom's employer knows Tom will be working only 3 months, he has to
padilas [110]

Answer:

0.48

Step-by-step explanation:

I timed the percentage 0.16×3=0.48

5 0
3 years ago
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