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3 years ago

The greatest common factor of 18 and 42 is: 02 6 09 18

Mathematics

1 answer:

Alex Ar [27]3 years ago

8 0

Answer:

Step-by-step explanation:

We can obtain the greatest common factor by listing the factors of the 2 numbers, that is

Factors of 18 are 1, 2, 3, 6, 9, 18

Factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42

The common factors are 1, 2, 3, 6

The greatest common factor is 6

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Step-by-step explanation:

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2 years ago

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2 years ago

Marcus invested $2000 in a bank account earning simple interest. The interest, I, he has after t years at an interest rate r is

Whitepunk [10]

Answer:

Step-by-step explanation:

<h3>Given</h3>

<u>The equation for simple interest:</u>

I = 2000rt

<u>And values</u>

Total = $2160
t = 2
r = ?

<h3>Solution</h3>

<u>Interest amount is</u>

$2160 - $2000 = $160

<u>Solving for annual interest rate</u>

160 = 2000*2r
160 = 4000r
r = 160/4000
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