2 years ago

Help pleas eldkjsdweggrwsddwsf

Mathematics

1 answer:

Cloud [144]2 years ago

7 0

I agree with the top guy

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Ln a+3 + ln a-3 = ln 16

Lilit [14]

$\bf log_{{ a}}(xy)\implies log_{{ a}}(x)+log_{{ a}}(y)\\\\
and\qquad \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-----------------------------\\\\
ln(a+3)+ln(a-3)=ln(16)\implies ln[(a+3)(a-3)]=ln(16)
\\\\\\
ln[a^2-3^2]=ln(16)\impliedby \textit{removing ln() from both sides}
\\\\\\
a^2-9=16\implies a^2=16+9\implies a^2=25
\\\\\\
a=\pm\sqrt{25}\implies a=\pm 5$

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2 years ago

A.) A new cell phone costs $625. Its sale price is $500. What’s the percent of decrease?

Andrej [43]

Answer:

175$

Step-by-step explanation:

8 0

2 years ago

What is 9:81 in simplest form

Vsevolod [243]

9:81
=1:9

hope it helps u

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2 years ago

Which of these sets of ordered pairs represent a function

GuDViN [60]

Both a and b are functions. for it to be a function, you can only have 1 y value per x value.

this is not a function because 1 has 2 y values
(1,3)(2,5)(1,4)(3,2)

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3 years ago

Read 2 more answers

Gina bought 2.3 pounds of red apples and 2.42 pounds of green apples. They were on sale for $0.75 a pound. How much did the appl

vampirchik [111]

4. 72•0.75= $3.54 is the correct answer

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3 years ago