<span>Which expression is equivalent to x + y + x + y + 3(y + 5)? 2x + 5y + 5 2x + y + 30 2x + 5y + 15 2x + 3y + 10
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Joe, Sarah, and Bob are all riding their bikes around the neighborhood. Joe can complete a lap around the neighborhood in 15 sec
1 answer:
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Solve the trigonometric equation:
Make a substitution:
and the equation becomes
Rewrite conveniently – t as + t – 2t, and then factor the left-hand side by grouping:
Factor out 2t + 1:
Substitute back for t = cos x:
Therefore,
where k is an integer.
Solution set:
I hope this helps. =)
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Solve the trigonometric equation:
Make a substitution:
and the equation becomes
Rewrite conveniently – t as + t – 2t, and then factor the left-hand side by grouping:
Factor out 2t + 1:
Substitute back for t = cos x:
Therefore,
where k is an integer.
Solution set:
I hope this helps. =)