What is a common denominator?

2 answers:

7 0

least common denominator is the lowest common multiple of the denominators of a set of fractions. It simplifies adding, subtracting, and comparing fractions.

Irina-Kira [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Because it is the lowest number that both 4 and 6 can reach by multiplying with whole numbers

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Answer:

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sergey [27]

4x² - 24x +7-3 =0
4x² - 24x + 4=0 /:4
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Use formula

$x = \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a} 

For our equation a=1, b= - 6, c = 1

x= (6+/- \sqrt{36-4)}/2 = \frac{-6+/- \sqrt{32} }{2} = \frac{-6+/- \sqrt{16*2} }{2} = \frac{-6+/-4 \sqrt{2} }{2} 

= -3 +/- 2\sqrt{2} 
$

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3 years ago

Find how many terms of a geometric progression 1+3+9 are required to make a total of more than 1 million.

Alborosie

The partial sum of a geometric sequence is

$\displaystyle \sum_{i=0}^N a^i = \dfrac{a^{N+1}-1}{a-1}$