3 years ago

Tank A has 35 gallons of water and is

Mathematics

1 answer:

poizon [28]3 years ago

4 0

Answer:

35 + 5x= 100 -8x =

Step-by-step explanation:

35 +5x =100 -8 x

5x + 8x = 100 -35

13x = 65

x = 13/65

x =5

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Which property was used to simplify the expression?<br><br> (y^5)^2 = y^10

gayaneshka [121]

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3 years ago

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How to solve this :') please help

blsea [12.9K]

Answer:

3/2

Step-by-step explanation:

sin(3π/4 - β) = sin(3π/4)cosβ - cos(3π/4)sinπ =

$\sin(\frac{3\pi}{4}-\beta)=\sin(\frac{3\pi}{4})\cos\beta-\cos\frac{3\pi}{4}\sin\beta\\=\frac{1}{\sqrt{2}}\cos\beta-(-\frac{1}{\sqrt{2}})\sin\beta\\\\=\frac{1}{\sqrt{2}}(\cos\beta +\sin\beta)\\\\\sin^2(\frac{3\pi}{4}-\beta)=\frac{1}{2}\cos\beta +\sin\beta)^2=\frac{1}{2}(\cos^2\beta +\sin^2\beta+2\sin\beta\cos\beta\\=\frac{1}{2}(1+\sin2\beta)=\frac{1}{2}(1-\frac{1}{5}) = \frac{2}{5}\\$