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2 years ago

What is the prime number 1,11,21,51,

Mathematics

2 answers:

BlackZzzverrR [31]2 years ago

4 0

Answer:

Step-by-step explanation:

11 is a prime number because prime numbers are numbers that can only be multiplied by themselves to get that answer. For example,

7 * 3 = 21,

but only 11 times 1 can make 11. So, 11 is the prime number

Hope this helps :)

Sphinxa [80]2 years ago

3 0

Answer:11

Step-by-step explanation:

11 is only divisible by 1

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5x-3x+7=3x-1<br><img src="https://tex.z-dn.net/?f=4r%20%2B%20%20%5Cfrac%7B2%7D%7B4%7D%20r%20%2B%2014%20%3D%205r%20-%20%20%5Cfrac

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$4r + \frac{2}{4} r + 14 = 5r - \frac{3}{4} r + 1 - 3\\ \\5r-4r-\frac{3}{4} r - \frac{2}{4} r = 14-1+3\\ \\r-\frac{5}{4}r =16\\ \\\frac{4}{4}r-\frac{5}{4}r =16\\ \\-\frac{1}{4}r=16\\ \\ r=-64$

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