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77julia77 [94]
2 years ago
12

Pls solve this as soon as possible

Mathematics
1 answer:
Scilla [17]2 years ago
5 0

Answer:

x³ - y³ = 0

Step-by-step explanation:

Given : \frac{x}{y}+\frac{y}{x}=-1

To Find : value of (x³ - y³)

Since, \frac{x}{y}+\frac{y}{x}=-1

\frac{x^2+y^2}{xy}=-1

x² + y² = -xy

x² + y² + xy = 0 -----(1)

Since, x³ - y³ = (x - y)(x² + xy + y²) [From the formula, (a³ - b³) = (a -b)(a²+ b² + ab)

                     = (x - y)(0) {From equation (1)]

                     = 0

Therefore, value of x³ - y³ = 0 will be the answer.

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In a recent​ study, volunteers who had 8 hours of sleep were three times more likely to answer questions correctly on a math tes
Shalnov [3]

Answer:

Step-by-step explanation:

Sleep Deprivation

In a recent study, volunteers who had 8 hours of sleep were three times more likely to answer correctly on a math test than were sleep-deprived participants.

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B. The samples population is hours of sleep and math test scores of people in general

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3 years ago
Giving brainliest to correct answer
Temka [501]

1.25

hope it helped and sorry if it's wrong i wish you luck

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2 years ago
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Answer:

Step-by-step explanation:

What are the answers you had to do on the test right now

7 0
2 years ago
Find f^-1(x) for f(x)=1/x^3 and state whether or not it is a function? (TIMED)
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3 years ago
What is the answer for 4y^2=81
Elena L [17]
<span><u><em>Answer:</em></u>
either y = 4.5
or y = -4.5

<u><em>Explanation:</em></u>
To get the solution, we will need to isolate the y on one side of the equation.
<u>This can be done as follows:</u>
4y</span>²<span> = 81

</span>\frac{4y^2}{4} =  \frac{81}{4}
<span>
y</span>²<span> = 20.25

y = +/- </span>√(20.25)<span>
either y = +</span>√<span>(20.25) = 4.5
or y = -</span>√<span>(20.25) = -4.5

Since there are no restrictions on the value of y, therefore, both answers would be accepted

Hope this helps :)</span>
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3 years ago
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