I believe that the answer is b
Find the area: you can split the figure into two rectangles.
The rectangles will be 7*20 and 7*11. The areas of those are <em>140 cm² and 77 cm²</em>. Add those up, and you get 217 cm².
Find the surface area: you can also split the net (the figure's surface area represented in a two-dimensional form) into two congruent triangles and three congruent rectangles. the triangles' area is <em>2(1/2*10*8) = 80 cm²</em>. The rectangles' area is <em>3(18*8) = 432 cm²</em>. Those totaled is 512 cm².
Let the given number be 'x',
Multiply both sides by 10,
Subtract the equations,
Thus, the recurring decimal number is equivalent to the fraction,
Answer:
Step 1
Swap sides so that all variable terms are on the left hand side.
-2x-8=y−2x−8=y
Step 2
Add 88 to both sides.
-2x=y+8−2x=y+8
Step 3
Divide both sides by -2−2.
\frac{-2x}{-2}=\frac{y+8}{-2}
−2
−2x
=
−2
y+8
Hint
Undo multiplication by dividing both sides by one factor.
Step 4
Dividing by -2−2 undoes the multiplication by -2−2.
x=\frac{y+8}{-2}x=
−2
y+8
Hint
Undo multiplication.
Step 5
Divide y+8y+8 by -2−2.
x=-\frac{y}{2}-4x=−
2
y
−4
Hint
Divide.
Solution
x=-\frac{y}{2}-4x=−
2
y
−4
Step-by-step explanation:
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