3 years ago

Which of the following are identities? Check all that apply.

Mathematics

1 answer:

gulaghasi [49]3 years ago

6 0

Answer:

A B and C

Step-by-step explanation:

Hopefully this helps

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qwelly [4]

Answer:

6x+9x+4-11=21x-7

15x-7=21x-7

15x-21x=0

x=0

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3 years ago

Is it proportional?Please help me

kvv77 [185]

I believe yes

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3 years ago

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PLEASE HELP: The mass of a ball is 128 g. It has a density of 0.5 g/cm³. What is the volume of the ball? Show your work and plac

tiny-mole [99]

Answer:

Part 1) The volume of the ball is 256 cm³

Part 2) The radius of the ball is 3.94 cm

Step-by-step explanation:

Part 1) we know that

The density is equal to divide the mass by the volume

D=m/V

Solve for the volume

The volume is equal to divide the mass by the density

V=m/D

In this problem we have

m=128 g

D=0.5 g/cm³

substitute

V=128/0.5=256 cm³

Part 2) what is the radius of the ball?

we know that

The volume of the sphere (ball) is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$V=256\ cm^{3}$

assume

$\pi =3.14$

substitute and solve for r

$256=\frac{4}{3}(3.14)r^{3}$

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3 years ago

39.98× 0.5 is approximately equal to

avanturin [10]

Answer:

Step-by-step explanation:

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erica [24]

Answer:

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Step-by-step explanation:

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3 years ago

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