Let this number be x, then
2x + 2 = x
2x - x + 2 - 2 = x - x - 2
x = -2
Thus this number is -2.
Check:
2(-2) + 2 = -2?
-4 + 2 = -2 ?
-2 = -2 True
In a perfect number, the sum of all the factors (including the number itself) is twice the number. E.g., the sum of the factors of 6 is 1 + 2 + 3 + 6 = 12 (equal to 2 x 6). Every prime number has two factors: 1, and itself. So, the sum of the factors is only one more than the prime number itself; for any number greater than 1, this can't be twice the number. For example, the prime number 7 has the factors 1 and 7, which add up to 8.
If the unknown number is q then: 2q+25 = 72
2n + 4 = 25
That equation has no solution. There is no possible number that's equal to 18 more than itself.
Then the number is 3
negative 2
3
6
No. Taking any percent < 100% of a number will always be a smaller number, because you are finding a part of that number. (Percents > 100% are more than the number, and 100% is the number itself. 200%, for example, is twice the number.)
2 x = 8 + 4x
In a perfect number, the sum of all the factors (including the number itself) is twice the number. E.g., the sum of the factors of 6 is 1 + 2 + 3 + 6 = 12 (equal to 2 x 6). Every prime number has two factors: 1, and itself. So, the sum of the factors is only one more than the prime number itself; for any number greater than 1, this can't be twice the number. For example, the prime number 7 has the factors 1 and 7, which add up to 8.
It is: 3x = 2x+8 and the value of x is 8
If the unknown number is q then: 2q+25 = 72
2n + 4 = 25
No. Since the square root of a number is whatever number times itself will equal the given number, there can be only one.
Five more than twice a number is -13 find the number
No. An exponent is the degree to which a number is multiplied by itself. For example in 23 the 3 is the exponent. 23 is equal to 2x2x2.