2 years ago

Solve the inequality and express your answer in interval notation. x² + 8x + 3 < 0

Mathematics

1 answer:

sattari [20]2 years ago

3 0

<u><em>Solution:</em></u>

A.) $(-4-\sqrt{13},-4+\sqrt{13})$

Hope this helps!

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Answer:

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Step-by-step explanation:

18 4/5 can be changed to 18 8/10 so

18 8/10 - 13 7/10 = 5 1/10 meters

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3 years ago

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Nelson used 35% of his savings account for his class trip in may. If he used 140 from his savings account while on his class tri

Iteru [2.4K]

Ok, so I’m guessing that 35% is $140 and that the question is asking to find the total at first.
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2 years ago

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3 years ago

Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial: 15ab-9a^

MrMuchimi

Answer:

$- \bigg(3a - \frac{5}{2} b) \bigg)^{2}$

Step-by-step explanation:

$15ab-9a^2-6 \frac{1}{4} b^2 \\ \\ = 15ab-(3a)^2-\frac{6 \times 4 + 1}{4} b^2 \\ \\ = 15ab-(3a)^2-\frac{24+ 1}{4} b^2 \\ \\ = 15ab-(3a)^2-\frac{25}{4} b^2 \\ \\ = 15ab- (3a)^2- \bigg(\frac{5}{2} b \bigg)^2 \\ \\ = - \{ - 15ab + (3a)^2 + \bigg(\frac{5}{2} b \bigg)^2 \} \\ \\ = - \{ (3a)^2 + \bigg(\frac{5}{2} b \bigg)^2 - 15ab \} \\ \\ = - \bigg(3a - \frac{5}{2} b \bigg)^{2}$

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3 years ago