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kkurt [141]
2 years ago
6

I need help solving this

Mathematics
2 answers:
Darya [45]2 years ago
5 0
4a+6b is the answer you have to look at the variable so for a 4a-2a+2a and b there is just one variable so it’s 6
Kruka [31]2 years ago
3 0

Answer:

4a+6b

Step-by-step explanation:

4a-2a=2a

2a+2a=4a

6b+4a

hope it helps

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Step-by-step explanation:

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\sin\,\theta =-\sqrt{1-\cos^2\,\theta} \\=-\sqrt{1-(\frac{-2}{5})^2 } \\\\=-\sqrt{1-\frac{4}{25} }\\\\=-\sqrt{\frac{25-4}{25} }\\\\=-\frac{\sqrt{21} }{5}

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