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Anni [7]
3 years ago
10

What is the solution of log3x + 4125 = 3?

Mathematics
2 answers:
Advocard [28]3 years ago
8 0
Log3 (x) + 4125=3 final answer
bazaltina [42]3 years ago
6 0

If we take it as:

log (3x+4125)=3

To solve this we have to understand the log this way:

log_{b} a=c    b^{c}=a

and remember that when b is not shown it means it is 10. So:

10^{3} =3x+4125\\1000-4125=3x\\x=\frac{-3125}{3} =-1041.66

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Step-by-step explanation:

Problem 1

For the first problem, we first want to find y so that we can plug it into the expression.

We can use elimination method for the system of equations to solve.

3x+3y=21

3x-y=5

We subtract both equations to eliminate x.

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Now that we know y, we can plug it into the expression.

\frac{4}{2} -3                                         [divide]

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We know that the answer is A.

--------------------------------------------------------------------------------------------------------

Problem 2

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\frac{|75-80|}{80} *100%                               [subtract]

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\frac{5}{80} *100%                                     [divide]

0.0625*100%                               [multiply]

6.25

Since the problem said to round to one decimal place, we know that the answer is 6.3%.

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