Answer:
-1.3
Step-by-step explanation:
The first answer is correct
Let x = Danielle, x + 5 = her sister, and .5x = her brother.
x + x + 5 + .5x = the sum of their ages.
Then we simplify to get 2.5x + 5 = the sum of their ages.
I think you mean how many thousands equal 20 hundreds. Well it's simple, 20 hundreds equal 20*100 which equals 2,000. Therefore, 20 hundreds equals 2 thousands.
Answer:
0.81 hour
Step-by-step explanation:
Given data
Distance= 544.32 miles
Speed= 672 miles per hour.
We know that
Speed= distance/time
Substitute
672= 544.32/time
cross multiply
time*672= 544.32
time= 544.32/672
time= 0.81 hour
