To get the amount you need to subtract from 840, just turn 5% into a decimal, which is 0.05, then just multiply 0.05 by 840 and subtract that number from 840
Answer:

Step-by-step explanation:
<u>Complete the square</u>
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Answer:
16y
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
3/4
24 ÷ 4 = 6
Multiply the top and bottom by 6
3/4 * 6/6 = 18/24
Answer:
Yes, because when waves are at the same place at the same time, the amplitudes of the waves simply add together and this is really all we need to know!
Step-by-step explanation:
The sum of two waves can be less than either wave, alone, and can even be zero. This is called destructive interference.
If we place the waves side-by-side, point them in the same direction and play the same frequency, we will have constructive interference.