Let car b be travelling at x mph. as they are travelling towards each other their speed of approach is (x + x + 15 ) mph. So we have the equation
speed = distance / time
2x + 15 = 250 / 2
2x = 125 - 15 = 110
x = 55 mph
Car b travels at 55 mph and car a travels at 70 mph Answer
V or x is something so if you add 9 to get 8 then you must subtract 9 from 8 to get -1 which would be your answer
Answer:
Step-by-step explanation:
Recall these rules of logs: log a + log b = log (ab), and log a^b = b log a
Then 3 log q = log q^3 and 6 log v = log v^6, and
log q^3 + 6 log v becomes log q^3 * v^6
Now rewrite this using b as the base:
log q^3 * v^6
b
So basically you use the ratio they have given you. You either multiply by 2 if image is enlarged or divide by 2 if it is reduced. (Keep in mind I got the 2 from your ratio : 1inch : 2inches) Therefore the find the original width, you multiply 10 by 2, giving you 20 inches.
