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3 years ago

Find the measures of (x-10) (4x-10)

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

4 0

The answer is 5x 6q

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Find the outlier of 22,26,31,37,3126,35,28,24

olya-2409 [2.1K]

Answer:

3126

Step-by-step explanation:

Because it is so much bigger than the other numbers.

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2 years ago

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A 4-ft vertical post casts a 12-in shadow at the same time a nearby cell phone tower casts a 122-ft shadow. How tall is the c

zepelin [54]

Answer:

the cell phone tower is 488 ft

Step-by-step explanation:

change 12 in = 1ft

4ft x ft

------------------- = ----------------

1ft shadow 122 ft shadow

using cross products

4 * 122 = 1 * x

488 = x

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3 years ago

Find, correct to four decimal places, the length of the curve of intersection of the cylinder 4x2 1 y2 − 4 and the plane x 1 y 1

charle [14.2K]

Answer- Length of the curve of intersection is 13.5191 sq.units

Solution-

As the equation of the cylinder is in rectangular for, so we have to convert it into parametric form with

x = cos t, y = 2 sin t (∵ 4x² + y² = 4 ⇒ 4cos²t + 4sin²t = 4, then it will satisfy the equation)

Then, substituting these values in the plane equation to get the z parameter,

cos t + 2sin t + z = 2

⇒ z = 2 - cos t - 2sin t

∴ $\frac{dx}{dt} = -\sin t$

$\frac{dy}{dt} = 2 \cos t$

$\frac{dz}{dt} = \sin t-2cos t$

As it is a full revolution around the original cylinder is from 0 to 2π, so we have to integrate from 0 to 2π

∴ Arc length

$= \int_{0}^{2\pi}\sqrt{(\frac{dx}{dt})^{2}+(\frac{dy}{dt})^{2}+(\frac{dz}{dt})^{2}$

$=\int_{0}^{2\pi}\sqrt{(-\sin t)^{2}+(2\cos t)^{2}+(\sin t-2\cos t)^{2}$

$=\int_{0}^{2\pi}\sqrt{(2\sin t)^{2}+(8\cos t)^{2}-(4\sin t\cos t)$

Now evaluating the integral using calculator,

$=\int_{0}^{2\pi}\sqrt{(2\sin t)^{2}+(8\cos t)^{2}-(4\sin t\cos t)$ $= 13.5191$

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3 years ago

The measure of angle 1 is 30°, and the measure of angle 2 is 110°. na ofanale 12

LenaWriter [7]

40 is the answer if your asking for the second angle

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3 years ago

Quotes: If you're cooler than me doesn't that me hotter than you

Elden [556K]

Answer:

Thats good!

Step-by-step explanation:

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3 years ago

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