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3 years ago

Someone help please!

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

8 0

Answer:

Volume of cone = 169.6 cubic unit

Step-by-step explanation:

In the given triangle height of the triangle is 9 unit and the base is 2 units.

Now this triangle is rotated around x-axis which forms a cone with circular base of radius = 9 unit and height of 2 units

Now volume of this cone formed will be

V = (1/3)π×r²×h

V = (1/3)(3.14)(9)²(2) = (1/3)(3.14)(162) = (3.14)(54) = 169.6 unit³

Therefore the resulting solid is a cone with a circular base of radius 9 units, height 2 units and volume 169.6 cubic unit.

UNO [17]3 years ago

3 0

If we imagine it in our head, we can see that the width (base) is 2 and the height is 9
the area is 1/2bh or 1/2*2=9 square units
it is rotated around x axis
meaning we have a sideways cone that is 2 hight and radius is 9
Vcone=1/3(hpir^2)
h=2
r=9
V=(1/3)(2)(3.141592)(9^2)
V=(2/3)(3.141592)(81)
V=(54)(3.141592)
V=169.6459
round
V=169.6 cubic units

base is 2 units
height is 9 units
area is 9 square units
it's a cone (sideways)
it has a volume of 169.6 cubic units

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3 years ago

The equation $y=-4.9t^2+3.5t+5$ describes the height (in meters) of a ball thrown upward at $3.5$ meters per second from $5$ met

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Answer:

Step-by-step explanation:

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2 years ago

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Dafna1 [17]

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2 years ago

I need help ASAP! PLEASE!

Ulleksa [173]

First you would need to solve x.
2x+x+14+x-38=180
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3 years ago

Read 2 more answers

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<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

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More can be learned about the z-distribution at brainly.com/question/25890103

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1 year ago