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mallorykay44
08.01.2021 •
Mathematics
Please help this us so confusing
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Ответ:
The surface area of the prism is 48 units².
Step-by-step explanation:
Remember, a net is simply the outer surface of a 3D shape flattened and spread out as a combination of 2D shapes.
With this info, the rest is relatively easy.
The net shows that there are 4 rectangular sides and 2 square sides. We also know the lengths and widths of all of them.
One rectangle is 5 units long and 2 units wide. One square is 2 units long and 2 units wide.
Let's put this into an equation.
4( 5*2 ) + 2( 2*2)
We are adding the areas of the rectangles and squares.
So, let's simplify that equation.
4(10) + 2(4)
40 + 8
48
Ответ:
x = -4 y = -1
Step-by-step explanation:
Solve for each variable by creating an equation and plugging it in to the other given equation.
- Equation to solve for x: x = -4y - 8
- Plug this equation into the other, solving for y so you have:
6(-4y-8)- 2y = -22 => -24y - 48 - 2y = -22 => -26y = 26 => y = -1
- Take this value and plug into the equation we created for x:
x = -4(-1) - 8 => x = 4 -8 => x = -4
- Check your work with given equation 6x -2y = 22:
6(-4) - 2(-1) = -22 => -24 +2 = -22 => -22 = -22