Answer:
-2x + 3
Step-by-step explanation:
Perimeter means to add all the sides of the triangle. Simply combine like terms:
(3x) + (2x - 5) + (-7x + 8)
(3x + 2x - 7x) + (-5 + 8)
(5x - 7x) + (8 - 5)
-2x + 3
-2x + 3 is your answer.
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Answer:
Bottom left/ 3rd one
Step-by-step explanation:
The correct answer would be the 3rd one. Since they don't have numbers, it would be the bottom left one. A coin can land on heads or tails so the answer as to be splits to heads or tails which then splits into heads or tails.
Answer:
72 degrees
Step-by-step explanation:
180-45-63=72
125-30=90 degrees in order to find the angle ABC
Answer:
-4 points
Step-by-step explanation:
Since each incorrect answer is worth the same amount of negative points, use the equation below.
3x = -12 DIvide both sides by 3
x = -4 points