2(x + 3) = x - 4 And 4(5x-2)=2(9x+3)

Mathematics

1 answer:

weqwewe [10]3 years ago

4 0

2x+6 - х -4

2x - x = - 4 - 6

x=-10

20x - 8 = 18x +6

20x - 18x = 6 +8

2x = 14

x=7

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Step 1: Sum = - 16x

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To check if the answer is correct, expand the bracket: (3x - 10)(x - 2)

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Answer:

$\approx 11.2\:\mathrm{in}$

Step-by-step explanation:

The swing of the tip of pendulum is creating an arc. The question is actually asking for the length of this arc. The length of an arc is given by $2r\pi\cdot \frac{\theta}{360}$ , where $r$ is the radius of the circle and $\theta$ is the angle of the arc.