Answer:
The correct answer is C: 700 cm³
Step-by-step explanation:
V = l × w × h
V = 7 × 5 × 20
V = 7 × 100
V = 700
Sorry, it's late, and I'm a bad explainer.
The error is adding (2x-12) with x and 30. This is wrong because you are adding the angles inside the triangle and you are assuming that (2x - 12) is the unlabeled angle INSIDE the triangle, when it is the exterior angle/outside of the triangle.
A straight line is also 180°.
(2x - 12) + ? = 180
30 + x + ? = 180
If you look at the equations, and put parentheses around 30 + x, (30 + x) and (2x - 12) should be the SAME NUMBER. So you could set them equal to each other to find x. (or you could also look at the picture and see that they both need/are missing the same angle)
2x - 12 = 30 + x
x = 42
Now you plug 42 into the exterior angle equation
2(42) - 12 = 84 - 12 = 72°
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Answer:
a = 30.0, c = 36.6, perimeter = 87.6 - this is what I got for my answer so I hope this helps
Answer:
Angle 2 is corresponding angle to angle 6 because they are in matching corners
Step-by-step explanation:
When two parallel lines are crossed by another line (transverse line), the angles at matching corners are congruent and are called corresponding angles.
In the question, other corresponding angles are 1 and 5, 7 and 3 and 8 and 4