Step-by-step explanation:
she could add water therefore in 52 minutes
Irrational Numbers<span>. All </span>numbers<span> that are not </span>rational<span> are considered </span>irrational. An irrational number<span> can be written as a decimal, but not as a fraction. An </span>irrational number<span> has endless </span>non<span>-repeating digits to the right of the decimal point.</span>
1. No (Is the multiples of Pi)
2.Yes
3. no
4. Yes
A. 2u+4<2 => u+2<1 => u<-1
B. 4u+1 < 21 => 4u < 20 => u<5
Here we need to combine the two inequalities, namely check for overlaps before writing in interval notation.
since u<-1 is already part of u<5, the solution set is u<-1, since u=0 (for example) will not satisfy the first inequality.
we write in interval notaion:
(-inf, -1)
the parentheses ( or ) mean the value closest to it is excluded.
the two values are the lower and upper bounds of the interval.
Here we mean the solutions are from -infinity (but excluded, because infinity is not a number) all the way up to -1, but -1 is also excluded because of the sign < (and not <=).
If the boundary value is to be included, we use the bracket.
For example, u<=-1 would be (-inf, -1].