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zheka24 [161]
3 years ago
8

Solve for B. R = x(A + B)

Mathematics
2 answers:
harkovskaia [24]3 years ago
5 0

Answer:

b = \frac{r - ax}{x}  \\

Step-by-step explanation:

r = x(a + b) \\ r = ax + bx \\ r - ax = bx \\  \frac{r - ax}{x}  = b

hope this helps

brainliest appreciated

good luck! have a nice day!

anyanavicka [17]3 years ago
4 0

Answer:

  B = R/x -A

Step-by-step explanation:

  \text{Divide the equation by x:}\\\\\dfrac{R}{x}=A+B\\\\\text{Subtract A:}\\\\\dfrac{R}{x}-A = B\\\\\text{The solution is ...}\\\\\boxed{B=\dfrac{R}{x}-A}

 

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Step-by-step explanation:

<u>Given:</u>

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First we have to find vectors BA and BC. We do that by subtracting the coordinates of the initial point from the coordinates of the terminal point.

In vector BA B is the initial point and A is the terminal point.

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BA • BC = (4)(0) + (2)(t) + (0)(1)

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2\sqrt{5}\sqrt{5}\cos{(m\angle{ABC})} = 4

10\cos{(m\angle{ABC})} = 4

\cos(m\angle{ABC}) = \frac{4}{10}=\frac{2}{5}

m\angle{ABC} = cos^{-1}{(\frac{2}{5})}

m\angle{ABC} = 66.4218^{\circ}

Rounded to two decimal places:

m\angle{ABC} = 66.42^\circ

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