3 years ago

If x^2 + 1/x^2 = 18 , find the value of x^3-1/x^3

Mathematics

2 answers:

astra-53 [7]3 years ago

6 0

Step-by-step explanation:

hope this helps you dear friend.

dangina [55]3 years ago

6 0

Please find attached photograph for your answer.

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What is 18/25 as a decimal

Serga [27]

Answer: 0.72

Step-by-step explanation:

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4 0

3 years ago

Read 2 more answers

Sold the equation. Round to the nearest hundredth. <br><br>17 · <img src="https://tex.z-dn.net/?f=1.8%5E%7B-x%2B7%7D%20%3D%205"

svetlana [45]

Answer:

Final answer is approx x=4.26.

Step-by-step explanation:

Given equation is $1.8^{-x+7} = 5$

Now we need to solve equation $1.8^{-x+7} = 5$ and round to the nearest hundredth.

$1.8^{-x+7} = 5$

$\log(1.8^{-x+7}) = \log(5)$

$(-x+7)\log(1.8) = \log(5)$

$(-x+7) = \frac{\log(5)}{\log(1.8)}$

$(-x+7) = \frac{0.698970004336}{0.255272505103}$

$-x+7 = 2.73813274192$

$-x = 2.73813274192-7$

$-x =−4.26186725808$

$x =4.26186725808$

Round to the nearest hundredth.

Hence final answer is approx x=4.26.

4 0

3 years ago

Which number line models the solution set of -2x + 7 > 17?Pls do 2 answers for good measures (and brainliest)

Sidana [21]

Step-by-step explanation:

We can immediately eliminate answers B and C because we have >, meaning that the circle on the number line has to be open.

-2x+7>17

subtract 7 on both sides

-2x>10

divide by -2. remember that dividing by a negative flips the greater than or less than sign.

x<-5

the answer is D

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3 years ago

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Rasek [7]

Don't listen but i'm gonna go with the third one

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3 years ago

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Virty [35]

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3 years ago

If x^2 + 1/x^2 = 18 , find the value of x^3-1/x^3​

If x^2 + 1/x^2 = 18 , find the value of x^3-1/x^3