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Veseljchak [2.6K]
3 years ago
9

Solve for d: 0.5(2d-6)=0.2(4x-10)

Mathematics
1 answer:
Law Incorporation [45]3 years ago
7 0

Answer:d=0.8x+1

Step-by-step explanation:

To solve 0.5(2d-6)=0.2(4x-10)

Open the brackets

We get

d-3=0.8x-2

To make d the subject of formular

d=0.8x-2+3

d=0.8x+1

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Use SOHCAHTOA (sin, cosine and tangent)

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When you have an angle that you want to solve, look at what information you're given. In this problem, we're give nthe sides that are opposite to and adjacent to the angle we want to solve. So, we use TAN.

And just as a note, θ this symbol is called theta, and it represents an angle.

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Then, use the inverse of tan (you can find the button on a calculator). You can use the inverse of sine, cosine or tangent whenever you want to switch them from one side of the equation to the other.

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