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Mandarinka [93]
3 years ago
11

If m + n = 12 and n = 5, what is m-n?don't know the answer ​

Mathematics
2 answers:
vladimir1956 [14]3 years ago
5 0

We need to find m first.

m+n=12, n=5 (plug in n as 5)

m+5=12   (subtract both sides by 5)

m=7

m-n: we know that m is 7 and n is 5

7-5=2

The final answer is 2.

Gnesinka [82]3 years ago
4 0

Answer:

2

Step-by-step explanation:

If <em>m+n = 12</em> and we know what <em>n</em> is, then we can substitute n in to solve for m!

It would look like this:

m + 5 = 12

m = 12 - 5

m = 7

Next, we plug our numbers in for each variable in the next equation <em>(m-n)</em>:

7 - 5

=

<em>2</em>

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If log (m + n) = log m+log n, show that m =n/n-1​
Sedbober [7]

log (m + n) = log m+ log n and proved it m =n/n-1​

Given;

If log (m + n) = log m+ log n

To show that the m =n/n-1​

Now, According to the question:

We know that,

Log (m + n) = log m + log n

Log (m + n ) = log (mn).                 [log a + log b = log ab ]

Cancelling the log on both sides.

then,

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Hence Proved

log (m + n) = log m+ log n and proved it m =n/n-1​

What is Logarithm?

A logarithm is the power to which a number must be raised in order to get some other number (see Section 3 of this Math Review for more about exponents). For example, the base ten logarithm of 100 is 2, because ten raised to the power of two is 100: log 100 = 2.

Learn more about Logarithm at:

brainly.com/question/16845433

#SPJ1

 

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Find the value of x
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Step-by-step explanation:

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