Answer:
C. 55
Step-by-step explanation:
Since all angles in a triangle add up to 180°, we have:
40 + y + y + 30 = 180
2y + 70 = 180
2y = 110
y = 55
If dave is reading 3.5 then the answer is Dave and he read 170 more pages then Jack.
Step-by-step explanation:
3.5 pages x 60 minutes = 210 pages per hour
210
- 40= 170
170 + 40= 210 so thats how I know 170 is the answer.
4x - 2 = 2x - 10
First, subtract 2x from both sides. / Your problem should look like:
Second, subtract 4x - 2 - 2x to 2x - 2. / Your problem should look like:
Third, add 2 to both sides. / Your problem should look like:
Fourth, simplify -10 + 2 to get -8. / Your problem should look like:
Fifth, divide both sides by 2. / Your problem should look like:
Sixth, simplify

to 4. / Your problem should look like:

Answer:
x = -4