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3 years ago

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The height of the pyramid in the diagram is three times the radius of the cone. The base area of the pyramid is the same as the

base area of the
cone. What is the expression for the volume of the pyramid in terms of the radius r of the cone?

1 answer:

Brut [27]3 years ago

7 0

Answer:

jhhfhgk

Step-by-step explanation:

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A=7/25<br> B=7/24<br> C=24/25<br> D=24/7

My name is Ann [436]

Answer:C

Step-by-step explanation:

3 0

2 years ago

Pleaseeeeeeee friends

IgorC [24]

B(x)=x2+3
I believe so

3 0

2 years ago

Factorise fully the following:<br>a) x² + 2x<br>b) 2x² - 6x<br>c) 15x - 10x³<br>d) 9x² + 3x³

Lostsunrise [7]

Answer:

a) $x(x+2)$

b) $2x(x-3)$

c) $5x(3-2x^2)$

d) $3x^2(3+x)$

Step-by-step explanation:

a) $x^2+2x$

When factoring a binomial (a polynomial with two terms), what we will be looking for are the terms that are shared between them.

In this problem, it can be seen that both of these terms have and x. This means that we can factor it out to get

$x(x+2)$

b) $2x^2-6x$

What are the common terms here?

It can be seen that each of these share a 2x, so our factored form would be

$2x(x-3)$

c) $15x-10x^3$

What about this one?

The common factor of this one is 5x, so our factored form would be

$5x(3-2x^2)$

d) $9x^2+3x^3$

The common factor of this one is $3x^2$ , so our factored form would be

$3x^2(3+x)$

6 0

3 years ago

A giraffe can travel 800 feet in 20 seconds. Write a direct variation equation for the distance traveled any time | Please expla

Diano4ka-milaya [45]

The direct variation equation is:
d=kt
where d is the distance that the giraffe travels
k is the constant of variation
and t is time
Now we are told that the giraffe can travel 800 ft in 20 seconds, so we can solve for the constant of variation (k)
800=k(20) divide both sides by 20
k=40-------------and the units are ft per sec
So now we can write
d=40t
ck
d=40t
800ft=40*20 ft
800 ft= 800 ft

Hope this helps!

8 0

2 years ago

True or false?, If I earn 60% more than you,then you must earn 37.5% less than me

neonofarm [45]

Answer:

True

Step-by-step explanation:

We have two salaries:

My salary is A

Your salary is B

If I earn 60% more than you

This means that

$A = (1 + 0.6)B = 1.6B$

You must earn 37.5% less than me

The ratio between your salary and mine is:

$r = \frac{B}{1.6B} = 0.625$

Your salary is 62.5% of mine. So you earn 100-62.5 = 37.5%. So this is true.

7 0

3 years ago