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Debora [2.8K]
3 years ago
11

What is the amplitude of the sinusoid's graph? Y = -5sin4x

Mathematics
2 answers:
pshichka [43]3 years ago
8 0
The amplitude of the sinusoid's graph is 5.
prisoha [69]3 years ago
3 0
The amplitude is 5,
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HELP ME PLEASE!
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Step-by-step explanation:

26% is (26-20)/(50-20) = 6/30 = 1/5 of the way between 20% and 50%. That means 1/5 of the solution is 50% acid.

50% acid: 1/5 · 100 mL = 20 mL

20% acid: 100 mL -20 mL = 80 mL

Delbert must mix 80 mL of 20% acid and 20 mL of 50% acid.

_____

Maybe you'd like to see an equation. Let x represent the amount of 50% acid required. Then 100-x is the amount of 20% acid needed.  The amount of acid in the mix is ...

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  x = (0.26 -0.20)/(0.50 -0.20)×100 = 20

This last expression should look a lot like the one we started with in this answer. It shows you how you can almost write down the answer to mixture problems without a lot of work.

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