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4 years ago

I will mark brainliest to whoever helps! :D

Mathematics

1 answer:

Arte-miy333 [17]4 years ago

8 0

Answer:

-7/2y

Step-by-step explanation:

cancel out the Z's than youre left with -7/2y :}

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A solid metal cube of side 1-2 cm has a mass of 15 grams.

sashaice [31]

Answer:

The mass of the second cube is about 1085.07 grams.

Step-by-step explanation:

I assume '1-2 cm' means 1.2cm here. Correct me if I am wrong and I'll edit my answer.

First, find the density of this cube:

$d=\frac{m}{v}$

where d is density, m is mass, and v is volume.

We have one of those, but we also need volume. The volume of a cube is just:

$v=a^3$

where a is the length of a side.

$\rightarrow v=1.2^3\\\rightarrow v=1.728$

The volume of this cube is 1.728cm³. Now, you can find the density;

$\rightarrow d=\frac{15}{1.728}\\\rightarrow d\approx8.6806$

The density of this material is about 8.68 grams per cubic centimeter.

Finally, you can use that density to find the mass of the other cube. Fin the volume of the second cube:

$\rightarrow v=5^3\\\rightarrow v=125$

The volume is 125cm³. Given the density and the volume, you can calculate the mass:

$\rightarrow d=\frac{m}{v}\\\rightarrow 8.6806=\frac{m}{125}\\\rightarrow 8.6806\times125=m\\\rightarrow m=1085.0694$

The mass of the second cube is about 1085.07 grams.

4 0

3 years ago

Can an someone please help me with number 14

Mnenie [13.5K]

Well the answer would be

6x2 ( 2 is an exponent) -7

8 0

3 years ago

Read 2 more answers

If f(x)= x squared and g(x)=2x^3- x squared, find f(x)-g(x).

tankabanditka [31]

Answer:

$f(x)-g(x)=2x^2(1-x)$

Step-by-step explanation:

Given that,

$f(x)=x^2\\\\g(x)=2x^3-x^2$

We need to find the value of f(x)-g(x).

Put the values of f(x) and g(x). So,

$f(x)-g(x)=x^2-(2x^3-x^2)\\\\=x^2-2x^3+x^2\\\\=2x^2-2x^3\\\\=2x^2(1-x)$

So, the value of f(x)-g(x) is equal to $2x^2(1-x)$ .

3 0

3 years ago

Sixty- four and five hundred eleven thousandths in standard form

skad [1K]

Sixty- four and five hundred eleven thousandths in standard form

64.511

3 0

4 years ago

Select the correct answer from each drop-down menu.

lesya [120]

Answer:

first blank is "Permutation", i dont know what the second blank is but its not 17550

Step-by-step explanation:

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3 years ago