An irrational number is a number that cannot be expressed in a fraction form while a rational number can.
an example of an irrational numbers are repeating numbers such as 0.77777... and examples of rational numbers are decimals such as 0.20, whole numbers such as 5, and fractions like 2/3
hope this helps a bit.
59-x=7(11-x)=59 yrs
59-x=77-7x
-x+7x-77-59
6x=18
x=18^6=3
so 3 years ago uncle's age is 7 times of Roy's age.
Well 57+59+61= 177 so the answer is 57
There must be a mistake in your question:
If 3 x ≤ 9, then : x ≤ 3 and :
x + 4 > 2
x > 2 - 4
x > - 2
Answer: D)
Solution set : - 2 < x ≤ 3
Yes,
x^2 -4x+4
= x^2 -2x-2x +4
= x (x-2) -2 (x-2)
= (x-2)(x-2)
As you can see it has repeated factor.
