X=3. 33x-21x equals 12x. 24+12=36. 12x divided by 36 equals 3
It can be useful to know the prime factorization of the number:
Then, remember that the n-th root of a number is the same as that number to the 1/n-th power:
![\sqrt[4]{256} = 256^{\frac{1}{4}}](https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7B256%7D%20%3D%20256%5E%7B%5Cfrac%7B1%7D%7B4%7D%7D)
Finally, you have to remember the rule for raising a power to another power, i.e. you multiply the exponents:
Put together everything we said so far to write
![\sqrt[4]{256} = 256^{\frac{1}{4}} = (2^8)^{\frac{1}{4}} = 2^{\frac{8}{4}} = 2^2 = 4](https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7B256%7D%20%3D%20256%5E%7B%5Cfrac%7B1%7D%7B4%7D%7D%20%3D%20%282%5E8%29%5E%7B%5Cfrac%7B1%7D%7B4%7D%7D%20%3D%202%5E%7B%5Cfrac%7B8%7D%7B4%7D%7D%20%3D%202%5E2%20%3D%204%20)
Answer:
50%
Step-by-step explanation:
15/30 = 3/6 = 1/2
15 = 50% of 30
Answer:
x≥0
Step-by-step explanation:
The arrow is moving right, to the larger numbers from the starting point at 0. This means that x has to be greater than 0
Because the point at 0 is an empty white dot, it means that it is a 'greater than or equal to' symbol ( looks like this ≤ or ≥, depending on which side you write the x)
So, the final answer is x is greater than or equal to 0, which in maths terms looks like this x≥0, or this 0≤x.
NOTE:
- filled in dot on the number line = greater than, or less than (>)
- empty dot on number line [like the one on this Q] = greater than or equal to, or less than or equal to (≥)
