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2 years ago

What is the solution set of the quadratic inequality x^2-5<_0

Mathematics

1 answer:

Juliette [100K]2 years ago

4 0

Answer:

-sqrt(5) ≤ x ≤ sqrt(5)

Step-by-step explanation:

x^2-5≤0

Add 5 to each side

x^2-5+5≤0+5

x^2 ≤5

Take the square root of each side, remembering to flip the inequality for the negative sign. Since this is less than we use and in between

sqrt(x^2) ≤ sqrt(5) and sqrt(x^2) ≥ -sqrt(5)

x ≤ sqrt(5) and x ≥- sqrt(5)

-sqrt(5) ≤ x ≤ sqrt(5)

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2 years ago

A hacker is trying to guess someone's password. the hacker knows (somehow) that the password is 12 characters long, and that eac

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3 years ago

Decrease 140g by 25%

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Answer:

• let's first get the percentage decrease:

$= { \rm{100\% - 25 \% }} \\ { \rm{ = 75\%}}$

• then multiply the percentage decrease with the mass given:

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2 years ago

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What sets does radical 12 belong to

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