Answer:
b = 7
Step-by-step explanation:
4b - 4 = 3b + 3
4b - 3b = 3 + 4
b = 7
Answer:
80 km/hr
Step-by-step explanation:
This is asking for speed.
Speed=Distance/Time
Speed=720/9
Speed=80 km/hr
Answer:
he would have 145 dallors after baying his bills
Step-by-step explanation:
Answer: y=0,5x²-x-1,5.
Step-by-step explanation:

We summarize (1) and (3):

Substitute b=-1 into (2):

From (5) subtract (4):

Substitute a=0,5 into (4):

Hense:
y=0,5x²-x-1,5.