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3 years ago

7.

Mathematics

1 answer:

xeze [42]3 years ago

3 0

Answer: b. Side BC and Side KL

Step-by-step explanation:

Only these two lines are in the same positions.

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3 years ago

What are two equivalent fractions for 1/2

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Find the length of the curve. R(t) = cos(8t) i + sin(8t) j + 8 ln cos t k, 0 ≤ t ≤ π/4

arsen [322]

we are given

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$x=cos(8t),y=sin(8t),z=8ln(cos(t))$

Arc length calculation:

we can use formula

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now, we can plug these values

$L=\int _0^{\frac{\pi }{4}}\sqrt{(-8sin(8t))^2+(8cos(8t))^2+(-8tan(t))^2} dt$

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$L=8\ln \left(1+\sqrt{2}\right)$ ..............Answer

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3 years ago

Solve for x.........

Ket [755]

Answer:

x = 12

Step-by-step explanation:

Angle QPR + Angle PQR = Angle HRQ

$30 + 4x + 2 = 8 + 6x \\ (6 - 4)x = 30 + 2 - 8 \\ 2x = 24 \\ x = 12$

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