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What is two more than twice a number that is equal to the number itself?
Wiki User
∙ 15y ago
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
Wiki User
∙ 15y ago
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How can you prove that a perfect number can never be a prime number?
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.
How do you write twenty five more than twice A number q equal 72?
If the unknown number is q then: 2q+25 = 72
How do you write 4 more than twice a number n is equal to 25?
2n + 4 = 25
How do you solve 5x equals 18 plus 5x?
That equation has no solution. There is no possible number that's equal to 18 more than itself.
13 is 7 more than twice a number?
Then the number is 3
Two more than twice a number is equal to the number itself?
negative 2
What is twice a number is equal to five more than four times the number?
3
Does 80 percent of 72 equal 125?
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.)
What number is eight less than twice one more than itself?
6
How can you prove that a perfect number can never be a prime number?
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.
What is algebraic expression for twice a number is equal to eight more than four times the number?
2 x = 8 + 4x
How do you write three times a number is equal to 8 more than twice the number?
It is: 3x = 2x+8 and the value of x is 8
How do you write twenty five more than twice A number q equal 72?
If the unknown number is q then: 2q+25 = 72
How do you write 4 more than twice a number n is equal to 25?
2n + 4 = 25
Does a number have more than two square roots?
No. Since the square root of a number is whatever number times itself will equal the given number, there can be only one.
What is five more than twice a number is -13. Find the number?
Five more than twice a number is -13 find the number
Is a number with 2 or more factors an exponent?
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.
