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zimovet [89]
3 years ago
9

Simplify each expression. (7x+x^4+x^3)-(6x-2x^3+8x^4)

Mathematics
1 answer:
aleksandrvk [35]3 years ago
8 0
the answer is x + 3x^3 - 7x^4
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the percent is 18

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21.92

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Andre45 [30]

An inverse variation can be represented by the equation

xy=k\to y=\dfrac{k}{x}

We have

\dfrac{y}{6}=x\qquad|\cdot6\\\\y=6x

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6 0
3 years ago
Tristan is 22 years younger than Sydney. 8 years ago, Sydney's age was 2 times Tristan's age. How old is Tristan now?
Serjik [45]

Answer:

Sydney is 52 years old, and Tristan is 30.

Step-by-step explanation:

Represent Tristan's age by t and Sydney's by s.

Then s - 8 = 2(t - 8), and t = s - 22

Substituting s - 22 in the first equation, we get:

s - 8 = 2(s - 22 - 8), or

s - 8 = 2s - 60

Solving for s:  -2s + s = -60 + 8, or -s = -52.

Sydney is 52 years old, and Tristan is 30.

4 0
3 years ago
Determine the values of "m" and "n" so the number would be in scientific notation:
Andreyy89

Answer:

79,000= 79•10^3

Step-by-step explanation:

so the amount of 0's = the power of 10.

In this situation there is 3 0's . so the power of ten will be 10^3

and then the number before the 0's will equal m

so m = 79 n = 3

And also (just as a side note) you can use the asterisk mark (*) as the multiplication symbol. on most keyboards the command is ctrl + 8. you can also use a bullet point (•) for multiplication symbol the command for that is alt + 0149

3 0
3 years ago
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