Answer: 27
Step-by-step explanation: Look below for an attached explanation.
Hope this helps!
$2600 per month earning
$520 per month on food
Her monthly income spent on foo is about $520.
Answer:
x=14
Step-by-step explanation:
x-2=12 +2 on both sides of equation
x=14
Answer:
612 Hz.
Step-by-step explanation:
The frequency of the sound will be proportionally higher when coming towards you. The increase is related to the speed of the train.
So the frequency will be:
580 + (580 / 343) * 18.8
= 612 Hz.
This is called the Doppler effect.
