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3 years ago

Solve for x. m=3xr^2

Mathematics

1 answer:

enyata [817]3 years ago

5 0

M = 3xr^2
x = m/3r^2.

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NEED ANSWERED ASAP!

antoniya [11.8K]

The difference between masses of both cones is: 838 grams

Step-by-step explanation:

As both cones have same height and radius. Both will have same volume

Here

r=4 cm

h= 10 cm

The volume is given by:

$V=\frac{1}{3}\pi r^2h$

Putting values

$V=\frac{1}{3}*\frac{22}{7}*(4)^2*10\\V=\frac{22}{21}*16*10\\V=167.62\ cm^3$

Mass of Steel Cone:

$M_s=Density\ of\ steel*Volume\\=7.75*167.62\\=1299.055\ grams$

Mass of Granite Cone:

$M_g=Density\ of\ granite*Volume\\=2.75*167.62\\=460.955\ grams$

Difference between masses of both cones

$D = M_s-M_g\\=1299.055-460.955\\=838.1\ grams$

Rounding off to nearest gram: 838 grams

The difference between masses of both cones is: 838 grams

Keywords: Volume, Mass

Learn more about volume at:

#LearnwithBrainly

6 0

3 years ago

In rectangle LONG, LN = 40 and ON=24. Find LO.

bonufazy [111]

Answer: LN 40

Step-by-step explanation: Because thin of the answers and how to do it

3 0

3 years ago

Read 2 more answers

Please help with this and solve it using the equation

EleoNora [17]

Answer:

Step-by-step explanation:

17-9=8 so the answer is 8

4 0

3 years ago

I NEEEED HELP PLEASE COMMENT IF U WILL HELP ME. ITS AN ALGEBRA QUESTION Enter your answer and show all the steps that you use to

Musya8 [376]

f(x)= 9x^3+ 2x^2 -5x+ 4

g(x)= 5x^3 -7x+ 4

f(x) - g(x)

= (9x^3+ 2x^2 -5x+ 4) - (5x^3 -7x+ 4)

= 9x^3+ 2x^2 -5x+ 4 -5x^3+ 7x -4

= (9x^3 -5x^3)+ 2x^2+ (7x -5x)+ (4-4) (combine like terms)

= 4x^3+ 2x^2+ 2x

= 2x* (2x^2+ x+ 1)

The final answer is 2x* (2x^2+ x+ 1).

6 0

3 years ago

Please help!! I don’t understand

solmaris [256]

Answer:

A: No positive numbers

Step-by-step explanation:

Hopefully this helps!

5 0

3 years ago