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kifflom [539]
3 years ago
5

If f(x) = 3x - 7, find f(4).

Mathematics
2 answers:
Nezavi [6.7K]3 years ago
8 0

Answer:

f(4)=5

Step-by-step explanation:

f(x)=3x-7

f(4)=3x4-7

f(4)=12-7

f(4)=5

sergey [27]3 years ago
5 0

Answer:

5

Step-by-step explanation:

3 * 4 - 7 = 5

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Answer:

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-\dfrac{\sqrt{2}}{2}\cos x+\dfrac{\sqrt{2}}{2}\sin x= -\dfrac{\sqrt{2}}{2}\\ \\\dfrac{\sqrt{2}}{2}\cos x-\dfrac{\sqrt{2}}{2}\sin x=\dfrac{\sqrt{2}}{2}\\ \\\cos 45^{\circ}\cos x-\sin 45^{\circ}\sin x=\dfrac{\sqrt{2}}{2}\\ \\\cos (x+45^{\circ})=\dfrac{\sqrt{2}}{2}

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3 years ago
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