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3 years ago

If you rotate a equilateral triangle by a side, what is the name of the resulting 3d shape

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

7 0

<h2> ☞ANSWER☜</h2>

<h3>3D shapes</h3>

Cube Cuboid
Sphere Square-based pyramid
Cylinder Triangular prism
Pentagonal pyramid Hexagonal prism

<h2> ☞EXPLANATION☜</h2>

<em><u>A solid of revolution is a three-dimensional figure obtained by rotating a two-dimensional figure (or curve) around a straight line (called the axis) that lies in the same plane. ... Since the triangle's interior is shaded, it creates the interior of the cone, creating a solid figure.</u></em>

<em><u>Three dimensional shapes are obtained by rotating the two dimensional shapes. When a circle is rotated we get sphere; when a triangle is rotated we get cone; when rectangle or square is rotated we get cylinder</u></em>

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An engine raises 120kg of water through a height of 40m in 30s what is the power of the engine?(g=10m/s2

oee [108]

Answer:

4800J/s

Step-by-step explanation:

m = 120kg

H = 40m

t = 30sec

Input energy = 120 × g × H = mgn

Ei = 120 × 40 × 30 = 144000J

Energy per sec, E1 = 144000 ÷ 30 = 4800J/s

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3 years ago

Read 2 more answers

Rewrite the following without an exponent.<br> (8/5) -1

Mandarinka [93]

Answer:

5/8.

Step-by-step explanation:

a^-1 = 1/a

So here we have:

(8/5)^-1

= 1/ (8/5)= 5/8.

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3 years ago

Using the bar graph, approximately what percent of the total population shown in the table is Cherokee?

seropon [69]

Answer:

about 35%

Step-by-step explanation

added together they = about 890,000. cherokee = about 310,000. 310,000 divided by 890,000 is 0.348.... 890,000 times 35% is like 310,something.

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3 years ago

Can you please help this is urgent??!!!!

Thepotemich [5.8K]

Answer:

B. 4

Step-by-step explanation:

A direct proportion has the form

y = kx or k=y/x,

where k is the proportionality constant.

Let's test some points.

Second point

k = 8/2 = 4

Fifth point

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3 years ago

) For which values of x is f '(x) zero? (Enter your answers as a comma-separated list.) x = (No Response) For which values of x

grigory [225]

Answer:

Check below, please

Step-by-step explanation:

Step-by-step explanation:

1.For which values of x is f '(x) zero? (Enter your answers as a comma-separated list.)

When the derivative of a function is equal to zero, then it occurs when we have either a local minimum or a local maximum point. So for our x-coordinates we can say

$f'(x)=0\: at \:x=2, and\: x=-2$

2. For which values of x is f '(x) positive?

Whenever we have

$f'(x)>0$

then function is increasing. Since if we could start tracing tangent lines over that graph, those tangent lines would point up.

$f'(x)>0 \:at [-4,-2) \:and\:(2, \infty)$

3. For which values of x is f '(x) negative?

On the other hand, every time the function is decreasing its derivative would be negative. The opposite case of the previous explanation. So

$f'(x)$

4.What do these values mean?

$f(x) \:is \:increasing\:when\:f'(x) >0\\\\f(x)\:is\:decreasing\:when f'(x)$

5.(b) For which values of x is f ''(x) zero?

In its inflection points, i.e. when the concavity of the curve changes. Since the function was not provided. There's no way to be precise, but roughly

at x=-4 and x=4

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3 years ago