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Yes, 7 is a prime number.

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Q: Is 7a prime number
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2a plus 5a simplified?

7a


Solve the equation 9a-a equals 19 plus 7a?

9a-a = 19+7a 8a = 19+7a 8a - 7a = 19 + 7a - 7a 1a = 19 a = 19


105 is 35 percent of what number?

1st, let: a= the number you are searching for, of which 105 is 35% of. because fractions are better to work with than percentage or decimals, 35%=7/20 therefore, 105=7a/20 105x20=7a 2100=7a a=2100/7 therefore a=300 to crosscheck, 35% of 300=105


What is 7a in the periodic table?

"A" is not used as a symbol in the periodic table. Each element is represented by a unique symbol, such as "H" for hydrogen or "Na" for sodium. If you meant "7A" as a group number, group 7A includes the halogens (fluorine, chlorine, bromine, iodine, and astatine).


What is five times the sum of some number plus 3 is equal to 7 times the number minus 1?

5a + 3 = 7a - 1 add 1 to both sides 5a + 4 = 7a so 4 = 2a as 5a + 2a = 7a 4 = 2a = 2 x 2 so a = 2 Check: then 5a + 3 = 10 + 3 = 13 and 7a - 1 = 14 - 1 = 13


What is the greatest common factor of 28a and 49ab?

7a 7a * 4 = 28a 7a * 7b = 49ab


Simplify each expression 7a a?

7a+a=8a


What is -7a plus 3a?

-7a + 3a = -4a


What is the reciprocal of 5xy over 7a?

It is: 7a/5xy


7 x a?

The relevant expression is 7a.


What is the variable for 8a-9 equals 7a-6?

The variable is a. You can solve for it, like this: 8a - 9 = 7a - 6 8a = 7a + 3 8a - 7a = 3 a = 3


What is you called when the prime factorization of a number is 1 and itself?

You is called a prime number!You is called a prime number!You is called a prime number!You is called a prime number!