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3 years ago

Solve 13+x/2=3x for x

Mathematics

2 answers:

pashok25 [27]3 years ago

8 0

Answer:

5.2

Step-by-step explanation:

13 + x/2 = 3x

13 = 3x - x/2

13 = 5x/2

26 = 5x

x = 26/5

x = 5.2

skad [1K]3 years ago

7 0

13=3x-x/2 13=5x/2 26=5x X=5.2

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Find all possible values of α+

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Answer:

$\rm\displaystyle 0,\pm\pi$

Step-by-step explanation:

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===========================

we want to find all possible values of α+β+γ when tanα+tanβ+tanγ = tanαtanβtanγ to do so we can use algebra and trigonometric skills first

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multiply both numerator and denominator by-1 which yields:

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$\rm\displaystyle \gamma = - \alpha - \beta \pm \pi$

isolate -α-β to left hand side and change its sign:

$\rm\displaystyle \alpha + \beta + \gamma = \boxed{ \pm \pi }$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago