Answer:
Matthew gets $18
Step-by-step explanation:
Since Deidra got $12, and they split the $30, Matthew will get $30-$12, or $18. You can also check your answer by finding that 12:18 is in fact a ratio of 2:3 by dividing both sides by 6.
Answer: 11-6=5
Explaining:
3a) Answer: 84 degrees
3x + 2(x+20)= 180 (total sum of angles in a triangle is 180 degrees)
5x+40 = 180
5x = 140
x= 28
3x= 28 x 3
= 84
Step-by-step explanation:1