2 years ago

Cuanto es r2-2r-7=0

Mathematics

1 answer:

vekshin12 years ago

6 0

Answer:

Step-by-step explanation:

The solution is attached

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Write log3 6 as a logarithm of base 2.

Sever21 [200]

$Use:\\\log_ab=\dfrac{\log_cb}{\log_ca}\ and\ \log_ab+\log_ac=\log_a(bc)\\\\\log_36=\dfrac{\log_26}{\log_23}=\dfrac{\log_2(2\cdot3)}{\log_23}=\dfrac{\log_22+\log_23}{\log_23}\\\\=\dfrac{\log_22}{\log_23}+\dfrac{\log_23}{\log_23}=\boxed{\dfrac{1}{\log_23}+1}\\\\other\ method\\Use:\\\log_ab=\dfrac{1}{\log_ba}\\\\\log_36=\log_3(2\cdot3)=\log_32+\log_33=\log_32+1=\boxed{\dfrac{1}{\log_23}+1}$

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2 years ago

Consider the line 7x+6y=5.

ladessa [460]

Answer:

Slope of parallel line: -7/6

Slope of perpendicular line: 6/7

Step-by-step explanation:

7x + 6y = 5

6y = -7x + 5

y= -7/6x + 5/6

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2 years ago

Montrell saves 8% of each paycheck for his college fund. This week he saved $18.80 from his paycheck, how much was he paid?

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x = 18.80/8%
x = 18.80/0.08
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2 years ago

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3 years ago

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katherine leans a 30-foot ladder against a wall so that it forms an angle of 72° with the ground how high up the wall does the l

juin [17]

Answer:

tan 72° = h/30

h = 30 tan 72°

h = 92.33

The ladder reaches a height of 92.33 ft.

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1 year ago

Cuanto es r2-2r-7=0​

Cuanto es r2-2r-7=0