3 years ago

If the sum of two numbers is 20 and one of those numbers is three times the other, what is the smaller number?

1 answer:

8 0

X = smaller number
y = bigger number

y = 3x

x+y = 20
x+3x = 20
4x = 20
x = 5

The smaller number is 5.

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Gala2k [10]

1. 3x-10=x+70
+10 -x
2x=80
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2. x+27+2x-39=180
3x-12=180
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3. 2x ÷ 80=5x+44
- 2x -44
36= 3x
12=x

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OlgaM077 [116]

ANSWER

$log_{15}( {2}^{3} ) = 3 \: log_{15}( {2} )$

EXPLANATION

According to the power property of logarithms:

$log_{x}( {y}^{n} ) = n \: log_{x}( {y} )$

The given logarithm is

$log_{15}( {2}^{3} )$

When we apply the power property to this logarithm, we get,

$log_{15}( {2}^{3} ) = 3 \: log_{15}( {2} )$

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