Answer: 1.13
Step-by-step explanation: 0.62-(-0.51) = 1.13
Hope it works
Answer:
Speed of sound is 340 meter per second.
Step-by-step explanation:
Let the speed of sound = x meter per second.
It is given that,
The new mode of travel has the speed 170 meter per second, which is 50% less than the speed of sound.
So, we get,
x - 50%x = 170
i.e. x - 0.5x = 170
i.e. 0.5x = 170
i.e. x = 340 meter per second
Hence, the speed of sound is 340 meter per second.
Answer:
Choice 3 and 5
Step-by-step explanation:
Answer:
69
Step-by-step explanation:
