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3 years ago

A rectangular block of copper metal has a mass of 1800 grams. The dimensions of the block

1 answer:

3 0

Use formula p=m/v
P is density
M is mass
V volume
So you have the volume already now 8x5x4= 160 which is the volume
P= 1800/160 after you divide you get 11.25
The density is 11.25

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Which formula shows a joint variation?

djyliett [7]

The answer is the first option: I, II and III.

The explanation is shown below:

1. By definition, there is a joint variation when a variable depends on two or more different variables. Therefore, you can express it as following:

$y=kxz$

Where $x,y$ and $z$ are the variables and $k$ is the constant of proportionality.

As you can see, $y$ is directly proportional to $x$ and $z$ .

2. Keeping the information above, you have:

I) $V=lwh$ ( $V$ varies jointly with $l$ , $w$ and $h$ .

II) $V=\frac{1}{3}r^{2}h\pi$ (If $\frac{\pi}{3}$ is the constant of proportionality, $V$ varies jointly with $r^{2}$ and $h$ ).

III) $V=Bh$ ( $V$ varies jointly with $B$ and $h$ .

8 0

4 years ago

Read 2 more answers

Collection of domestic animals is a set. However, a collection of big domestic animal is not a set. How do you justify this stat

Schach [20]

Collection of domestic animals is a set. However, a collection of big domestic animal is not a set as it is a subset.

<h3>What are Domesticated animals?</h3>

Domestic animals are known to bee dogs, cats, etc. that can live along with humans.

Note that Collection of domestic animals is a set but the collection of big domestic animal is a subset of domestic animals this is because the big domestic animal are part of the domestic animals and as such it will be a subset.

Learn more about animals from

brainly.com/question/14442826

#SPJ1

6 0

2 years ago

Nonamiya [84]

The answer is 1 km
————————————-

Proofs:

Area of a rectangle=length x width

Area of rectangle= 4kmE2
Length of rectangle= 4km
Width of rectangle= X

4=4(x)

Find x

4=4(1)

Therefore the width of the rectangle= 1km
——————————————————————————
Brainliest?

4 0

3 years ago

Frank received a monthly statement for his college savings account. It listed a deposit of $100 as +100.00. It listed a withdraw

artcher [175]

Answer:

Add: $100

Take Out: $25

Total: $835.50

Step-by-step explanation:

A deposit is an amount that is put into the account, by the owner or by someone else.

A withdrawal is an amount that is taken out of the account.

The overall ending balance shows the total amount in the account at the end of the month.

7 0

3 years ago

HELP HELP HELP KAISHSNA

Leokris [45]

Answer:

i think its just the last one

Step-by-step explanation:

because the first two are all real numbers and the thrid equals one

8 0

3 years ago