Answer:

Step-by-step explanation:
The equation that will model this situation will be of the form
where
is the time in hours john has traveled since the gas station, and
is the distance.
Now we know that John has already traveled 20 miles when he is at the gas station, this means at
,
; or


Thus we have
.
Now we need to figure out 
When John reaches home 2 hours later he notes that he has traveled 30 miles, which means he has traveled 30 - 20 = 10 miles; thus we have


Now we have the full equation:

BA can be another name for AB
Answer:
41.13 sq m
Step-by-step explanation:
area of square = 4² = 16
there are two quarter-circles which equals one semicircle
area of semi-circle is πr²/2
A = 4²π/2 = 8π = 25.13
add together: 16 + 25.13 = 41.13
Hello!
no, that is not the correct way to isolate x. you were somewhat on the right track however.
here's the correct way:
add 7 to both sides to get -3x = -6
then divide both sides by -3 to get x = 2
I hope this helps, and have a nice day!
Step-by-step explanation:
3x+6+4x-20=10
7x-14=10
7x=24
x=24/7