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Sonja [21]
4 years ago
15

Find the value of b: -4b + x = 7 8b + 2x = -9

Mathematics
1 answer:
Vedmedyk [2.9K]4 years ago
8 0

Answer:

  b = -23/16

Step-by-step explanation:

The variable x can be eliminated from the system by multiplying the first equation by -2 and adding that to the second equation.

  -2(-4b +x) +(8b +2x) = -2(7) +(-9)

  16b = -23 . . . . . collect terms

  b = -23/16 . . . .  divide by the coefficient of b

The value of b is -23/16 = -1 7/16.

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To solve this problem, we can use the tan function to find for the distances covered.

tan θ = o / a

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4 0
3 years ago
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