1. (2x + 1)(x - 7)
2. -x - 4
3. -31x -35
4. 57x + 112
5. (-x) (-x)
A and a' are vertical angles, therefore a' = a
We know: The sum of the measures of triangle is always 180°.
Therefore: a' + b + d = 180° → d = 180° - a - b.
d and c are adjacent angles, therefore d + c = 180°
substitute
180° - a - b+ c = 180° |-180°
-a - b + c = 0 |+a |+b
c = a + b
Answer:
slope is -3
it is the only one that makes sense because the line goes through -3
Answer: y < 1/2x - 3
Step-by-step explanation:
Answer: 48
Step-by-step explanation:
There are 4 quarts in a gallon. 4 multiplied by 12 is 48.