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notka56 [123]
3 years ago
8

Which number makes the equation true?

Mathematics
2 answers:
Marina CMI [18]3 years ago
8 0
5
Because 5 divided by thirty equals one sixth
Crazy boy [7]3 years ago
3 0
A. 5

5*6=30, so 5/30= 1/6th
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X increased by 10 is equal to 42
AysviL [449]

Answer:

x = 32

Step-by-step explanation:

x + 10 = 42, then you subtract 10 from both sides to get 32

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2 years ago
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Help with #5 please!
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If you plug in the x and y of choice b you would see that it does not equal 18.

6(3) + 3(-1) = 18
18 + (-3) = 15
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The greatest common factor of 3m2n + 12mn2 is
Karolina [17]
3m^2n + 12mn^2=3mn\cdot(m+4n)
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EVALUATE: 10x – 2y3 (if x = 5 and y = 2)​
Archy [21]

Answer:

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= 50 - 16

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2 years ago
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Solve for x : log(3x) + log(x + 4) = log(15).<br><br>Please explain it to me.​
zlopas [31]

Answer:

x = 1

Explanation:

\sf \rightarrow log(3x) + log(x + 4) = log(15)

Rule: log(a) + log(b) = log(ab)

\sf \rightarrow log(3x(x + 4)) =  log(15)

cancel out log on both sides

\sf \rightarrow 3x(x + 4) = 15

relocate constant variable

\sf \rightarrow 3x^2 + 12x -15 = 0

take 3 as a common factor

\sf \rightarrow 3(x^2 + 4x -5) = 0

divide both sides by 3

\sf \rightarrow x^2 + 4x -5 = 0

middle term split

\sf \rightarrow x^2 + 5x -x-5 = 0

factor common terms

\sf \rightarrow x(x  + 5) -1(x+5)= 0

collect into groups

\sf \rightarrow (x-1)(x+5)= 0

set to zero

\sf \rightarrow x-1 = 0 , \ x+5= 0

relocate variables

\sf \rightarrow x = 1,  \ x = -5

There must be a positive solution for log, so the solution is only x = 1

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1 year ago
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