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3 years ago

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Please help, I need the answer ASAP! This is timed... Which expression is equivalent to 3x^-6y^-3 / 15x^2y^10 ? Assume x≠0, y≠0.

2 answers:

Ket [755]3 years ago

7 0

Answer:

1/(5x^8y^13)

Step-by-step explanation:

To simplify this exponential expression we must use some of the laws of exponents, specifically the quotient law. The quotient law states that if the base is the same and you're dividing we subtract the exponents and so: $\frac{a^m}{a^n}= a^{m-n}$

Therefore:

$\frac{3x^{-6}y^{-3}}{15x^2y^{10}} =\frac{x^{-6-2}y^{-3-10}}{5}=\frac{x^{-8}y^{-13}}{5}\\ \\\frac{1}{5x^8y^{13}}$

Yakvenalex [24]3 years ago

3 0

Answer:

b

Step-by-step explanation:

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Brand 1 Brand 2 Difference

37734 35202 2532

45299 41635 3664

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$=\sqrt{\dfrac{(2532-939.5)^2+(3664-939.5)^2+(740-939.5)^2 ...+(285-939.5)^2}{8-1}}$

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b)SD= 1441.21

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confidence level =99%

significance level =α= 0.01

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3 years ago

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Gelneren [198K]

Answer:

34 and 17

Step-by-step explanation:

a) set up the variables

Let x represent the first number Then y will represent the second number.

b) What is the equation that represents the above situation?

x = 2y
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c) Solve the equation.

<u>Substitute x in the second equation and solve for y:</u>

x + y = 51
2y + y = 51
3y = 51
y = 51/3
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<u>Then find x</u>

x = 2y = 2*17 = 34

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3 years ago

Read 2 more answers

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Step-by-step explanation:

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