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satela [25.4K]
3 years ago
11

Solve for r in terms of q, s, t and u. St= -ruq

Mathematics
1 answer:
Anni [7]3 years ago
4 0

Answer:

hope this helps

give brainliest

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Find the exact value of sin 105 degrees​
STALIN [3.7K]

Answer:

\frac{\sqrt{6}+\sqrt{2}}{4}

Step-by-step explanation:

I'm going to write 105 as a sum of numbers on the unit circle.

If I do that, I must use the sum identity for sine.

\sin(105)=\sin(60+45)

\sin(60)\cos(45)+\sin(45)\cos(60)

Plug in the values for sin(60),cos(45), sin(45),cos(60)

\frac{\sqrt{3}}{2}\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}\frac{1}{2}

\frac{\sqrt{3}\sqrt{2}+\sqrt{2}}{4}

\frac{\sqrt{6}+\sqrt{2}}{4}

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3 years ago
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343in3 is the answer to this math question
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BaLLatris [955]

Answer:

x=21/5

Step-by-step explanation:

5x:9 = 7:3

Turn the ratios into fractions:

5x/9 = 7/3

Then cross mutiply

15x=63

x=21/5

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2 years ago
Answer all five questions below
Svetach [21]

Answer:

use a calculator

Step-by-step explanation:

there for question b

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Heeeeeeeeeeeeeelp<br>Please help!​
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Answer:x=4

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