Find each difference. If you get stuck, consider drawing a number line diagram. HELP ASAP 1. 9 - 4
2. 4 - (-9)
3. 50 - 400
4. -50 - (-200)
5. -120 - 400
6. 0 - (-200)
7. 2 + 3
8. (-11) + 2
9. (-6) - (-3)
10. 2 - (-11)

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

How do you write y-10=2 (x-8) in standard form