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ELEN [110]
3 years ago
8

Convert 62.4lb/ft^3 to kg/m^3

Mathematics
2 answers:
BaLLatris [955]3 years ago
5 0

keeping in mind that there are about 2.2 lbs in 1 kilogram, and there are about 35 ft³ in 1 m³.


\bf \cfrac{62.4 \underline{lb}}{\underline{ft^3}}\cdot \cfrac{kg}{2.2 \underline{lb}}\cdot \cfrac{35 \underline{ft^3}}{m^3}\implies \cfrac{62.4\cdot 35}{2.2}\cfrac{kg}{m^3}\implies \cfrac{2184}{2.2}\cfrac{kg}{m^3}\implies 992.\overline{72}~\frac{kg}{m^3}

melamori03 [73]3 years ago
4 0
Poop poooooooooooooooop
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Cory writes the polynomial x7 3x5 3x 1. Melissa writes the polynomial x7 5x 10. Is there a difference between the degree of the
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Degree of a polynomial gives the highest power of its terms. Yes there is a difference between the degrees of sum and difference of the polynomials.

<h3>What is degree of a polynomial?</h3>

Degree of a polynomial is the highest power that its terms pertain(for multi-variables, the power of term is addition of power of variables in that term).

Thus, in x^3 + 3x^2 + 5, the degree of the polynomial is 3 as the highest power in its terms is 3.

(power and exponent are same thing)

<h3>What are like terms?</h3>

Those terms which have same variables raised with same powers.

For example, x^3 and 3x^3  are like terms since variable is same, and it is raised to same power 3.

For example 4x^2 and x^3 are not like terms as the variables are same but powers aren't same.

The given polynomials are:

c(x) = x^7 + 3x^5 + 3x + 1\\\\p(x) = x^7 + 5x + 10

Their sum is

c(x) + p(x)  = x^7 + 3x^5 + 3x + 1 + x^7 + 5x + 10 = (1+1)x^7 + 3x^5 + (3+5)x + 11\\\\c(x) + p(x) = 2x^7 + 3x^5 + 8x + 11

(only like terms' coefficients can be added (or subtracted) for addition or subtraction of them )

The sum's degree is 7

Their difference is:

c(x) - p(x) = x^7 + 3x^5 + 3x + 1 - x^7 -5x - 10 = (1-1)x^7 + 3x^5  +(3-5)x -9\\\\c(x) - p(x) = 3x^5 - 2x - 9

Difference's degree is 5

Thus, both's degrees are not same.

Thus, Yes there is a difference between the degrees of sum and difference of the polynomials.

Learn more about subtraction of polynomials here:

brainly.com/question/9351663

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