Answer:
30
Step-by-step explanation:
29 - 19 = 10 (difference)
triple 10 now:
10 x 3 = 30
The rate a computer works is 1/time. Working together, you add the rates.
Let new computer be x, old computer be y.
x = y - 7

Rounded to nearest tenth gives:
x = 23 hours
Answer:c
explanation: its 90 degrees
good luck!
Answer:
The addition that matches the problem is the first one.
Step-by-step explanation:
The red line goes back 8 so it is a -8 and the blue line goes forward 4 so it is a postive 4.
4 + (-8) = -4