3 years ago

How do you solve this problem?

Mathematics

1 answer:

belka [17]3 years ago

4 0

Answer:

You solve this problem

Step-by-step explanation:

Fire and sun light

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Y = 3 sin2x, y = 0, 0 ≤ x ≤ π; about the x−axis

Dominik [7]

I assume you're revolving the region with those bounds about the x-axis, and supposed to find the volume.

Via the disk method,

$\displaystyle\pi\int_0^\pi(3\sin2x)^2\,\mathrm dx=9\pi\int_0^\pi\sin^22x\,\mathrm dx$

Recall the half-angle identity for sine:

$\sin^2t=\dfrac{1-\cos2t}2$
$\implies\displaystyle\frac{9\pi}2\int_0^\pi(1-\cos4x)\,\mathrm dx$
$=\displaystyle\frac{9\pi}2\left(x-\frac14\sin4x\right)\bigg|_{x=0}^{x=\pi}$
$=\dfrac{9\pi^2}2$

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4 years ago

Dahasolnce [82]

Answer:

C (3x4) + (5x2) + 20

Step-by-step explanation:

3 things that cost 4 dollars. 5 things that cost 2 dollars and one that cost 20.

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3 years ago

The temperature is -2 degree Fearing height if it drops 1 degree every 10 minutes what will the temperature be in an hour 1 hour

ExtremeBDS [4]

-2
1 degree ever 10mins
1 hour = 60mins
1x6
Drops 6°f
-2+-6 = -8 degrees after 1 hours

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3 years ago

What is 144 divided by 960?Working out is needed.

Ipatiy [6.2K]

Answer:

The answer is 0.15

Step-by-step explanation:

Hope this helps!

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3 years ago

Read 2 more answers

Find the area of the figure.

Otrada [13]

Answer:

20 square units

Step-by-step explanation:

The figure shows a triangle whose;

Base AC is 8 units
Height is 5 units

We are supposed to get its area;

Area of a triangle is given by the formula;

Area = 0.5×b×h

Thus;

Area = 0.5 × 8 units × 5 units

= 20 square units

Hence, the area of the figure is 20 square units

8 0

3 years ago