4 years ago

Factor 144x^2 - 169 = 0

Mathematics

1 answer:

Irina-Kira [14]4 years ago

8 0

X= 13/12, -13/12. There

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Solve the inequality:-3x-4/7 >5

Aliun [14]

x < - $\frac{13}{7}$

add $\frac{4}{7}$ to both sides

- 3x > $\frac{4}{7}$ + $\frac{35}{7}$

- 3x > $\frac{39}{7}$ ( divide both sides by - 3 )

note that when we divide/ multiply by a negative quantity we must reverse the inequality symbol

x < - $\frac{13}{7}$

6 0

4 years ago

The value of a collectible is changing such that dv/dt = 2t/(sqrt(t^2+1)) given in 4/year, and t is the number of years from 200

alina1380 [7]

Answer:

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Step-by-step explanation:

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3 years ago

What do you multiply to get 8 and add to get 4

nasty-shy [4]

Hi Mitchell

-1*8+12

(-1*8)+12

-8+12=4

I hope that's help :0

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3 years ago

Question number 8. Prove that 3 + √5 is an irrational number.

Marina86 [1]

Answer :

Let's assume the opposite of the statement i.e., 3 + √5 is a rational number.

$\\ \sf \: 3 + \sqrt{5} = \frac{a}{b} \\ \\ \qquad \: \tiny \sf{(where \: \: a \: \: and \: \: b \: \: are \: \: integers \: \: and \: \: b \: \neq \: 0)} \\$

$\\ \sf \: \sqrt{5} = \frac{a}{b} - 3 = \frac{a - 3b}{b} \\$

Since, a, b and 3 are integers. So,

$\\ \sf \: \frac{p - 3b}{b} \\ \\ \qquad \tiny \sf{ \: (is \: \: a \: \: rational \: \: number \:) } \\$

Here, it contradicts that √5 is an irrational number.

because of the wrong assumption that 3 + √5 is a rational number.

$\\$

Hence, 3 + √5 is an irrational number.

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4 years ago

Does all rhombuses have 2 pairs of parallel sides?

attashe74 [19]

Yes, all of the rhombuses have 2 pairs of parallel side.

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3 years ago