280cm because if you multiply all of them up
Answer:
the total of angle's in traingle is 180
so 85+53+c=180
c=180-138
c=42
Step-by-step explanation:
Given :
log(a) + log(b) + log(c) = log(a + b + c)
We know that by property
log(a) + log(b) + log(c) = log(abc)
Therefore,
log(abc) = log(a + b + c)
Thus,
(abc) = (a + b + c)
Thus when a = b = c = 0,
then (abc) = (a + b + c)
0 = 0
and when a = 1, b = 2, c = 3,
then (abc) = (a + b + c)
(1 x 2 x 3 ) = (1 + 2 + 3)
6 = 6
Answer:
- 3 hours
- 1 hour 45 minutes
- 300 miles
Step-by-step explanation:
1. The trains are moving toward each other at a total speed of 50 +20 = 70 miles per hour. Together, they cover the 210 mile distance in ...
time = distance/speed
time = 210 mi/(70 mi/h) = 3 h
The trains collide after 3 hours.
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2. The fly is closing with the freight train at a speed of 100 +20 = 120 miles per hour. Together, the fly and the train cover the initial 210 mile distance in ...
(210 mi)/(120 mi/h) = 7/4 h = 1 hour 45 minutes
The fly first meets the oncoming freight train after 1 h 45 min.
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3. The fly is flying for all three hours before the trains collide, so, at 100 miles per hour, will fly 300 miles.
