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Why does a number with an exponet of 1 always ends up with the base number?
That is the law of exponents- the exponent is the number of times you multiply the number and times 1 5 to the third power is 5 x 5 x 5 x 1 = 125 5 to the second power is 5 x 5 x 1 = 25 5 to the one power is 5 x 1 = 5 = base number 5 to the zero power is 1
What number when increased by 1 and doubled and then increased by 5 has a result that is the same as when the number is increased by 1?
let x be the number, then: (x + 1) × 2 + 5 = x + 1 → 2x + 2 + 5 = x + 1 → 2x + 7 = x + 1 → 2x - x = 1 - 7 → x = -6 The number is -6. Checking: -6 +1 = -5; 5 × 2 = -10; -10 + 5 = -5 which is the same as -6 + 1 = -5.
5 times an unknown number decreased by the same unknown number is less than the opposite of the sum of the unknown number and 5. What is the number?
The answer is 1. 5 times x - x < 5 + x It has to be 1, anything over 1 could not be less than.
The square root of 5 less than 6 times a certain number is divided by the number and the quotient is 1. find the number?
Suppose the number is x then [6x - sqrt(5)]/x = 1 so 6x - sqrt(5) = x or 5x = sqrt(5) x = sqrt(5)/5 = sqrt(5)
Find the number of factors that the number 625 has?
Identify the prime factors of 625 which are : 5 x 5 x 5 x 5 = 625. The factors of 625 are therefore 1 x 625, 5 x 125 and 25 x 25. As the number 25 is effectively duplicated then 625 has 5 factors (1, 5, 25, 125 & 625)
