3 years ago

show that, except for 2 and 5, every prime number can be expressed as 10k+1, 10k+3 10k+7, 10k+9, where k is an interger

1 answer:

8 0

10(6)+1=61
10(15)+3=<span>153
10(4)+7=</span><span>47
1</span>0(9)+9=<span>99

this is true because when you multiply a number by 10 it will be an even number(2,4,6,8,etc...)...then when you add an odd number to that the number will turn odd(153,47,99,etc..)... and when you multiple integers they will always multiply to an even number </span>

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What is the absolute value of –6? Use the number line to help answer the question. A number line going from negative 7 to positi

drek231 [11]

<h3>Answer: 6</h3>

Mark the locations -6 and 0 on the number line. Note that going from -6 to 0, or vice versa, will take exactly 6 steps. Put another way, the distance between 0 and -6 is 6 units. Absolute value represents distance, so it is never negative.

We say $|-6| = 6$