Answer:
1,560mi/h
Step-by-step explanation:
390 miles in 15 minutes
X miles in 60 minutes
(Cross multiplication)
(390*60)/15 = 1560
Answer:
Decimal Form = 0.6 Exact form 2/3
Step-by-step explanation:
We need some sort of diagram to see what they are. Is there any way to say that ac = db? Either equal angles or equal lines.
x + 3 = 3x - 19 Add 19
x + 3 + 19 = 3x Subtract x
21 = 2x
x = 21 / 2
x = 10.5
ac = 10.5 + 3
x = 13.5
Yes it is because if you multiply 3*3=9
then what you do on top you do on the bottom 10*3=30
