Log(3^2)+log(5)=log(x)
9*5=x
x=45
Answer:
The options doesn't match or the question is wrong but the answer is (1,2.5)
Step-by-step explanation:
Answer:
The sides form a <u>right triangle</u>
Step-by-step explanation:
\sqrt(130)km = 11.4 km
Let x be the length of the train.
On the basis of the observer;
Speed of the train = x/6
On the basis of the bridge;
Total distance covered by any point of the train= 350+x
Speed = (350+x)/20
Equating the two expressions of speed;
x/6 = (350+x)/20
20(x) = 6(350+x)
20x = 2100+6x
(20-6)x = 2100
14x = 2100
x= 2100/14 = 150 m
Speed = x/6 = (350+x)/20 = 150/6 = 500/20 = 25 m/s.
Therefore,
Length of train = 150 m
Speed of train = 25 m/s
D.11.5 because when you bring the line and the dot it is 11.5
