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ra1l [238]
3 years ago
5

7 - (2x + 1) + 4x please show solving steps as well

Mathematics
1 answer:
xeze [42]3 years ago
7 0

Answer:

2x + 6

Step-by-step explanation:

7 - (2x + 1) + 4x

Distribute the negative inside 2x+1

7 - 2x - 1 + 4x

Remind that <u>negative</u><u> </u><u>multiply</u><u> </u><u>negative</u><u> </u><u>must</u><u> </u><u>equal</u><u> </u><u>positive</u><u>.</u>

variables cannot sum/add/subtract with constants.

They must be the same terms.

4x - 2x - 1 + 7 \\ 2x + 6

Therefore, our answer is 2x+6

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For each angle θ listed below, find the reference angle α, and then find sin θ. Round sin θ to four decimal places, if necessary
babunello [35]

Answer with explanation:

It is given that

 \rightarrow\Theta =132^{\circ}

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Formula to find reference Angle

→If Angle lies in first Quadrant

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→If Angle lies in third Quadrant

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→If Angle lies in fourth Quadrant

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Reference Angle

   =180^{\circ}-132^{\circ}\\\\=48^{\circ}

⇒sin 48°=0.7431448

Rounding to four decimal places

Sin 48°=0.7432

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