Answer:
7.9
Step-by-step explanation:
Due the parentheses first so 16+4+11*2-21 then multiply 16+4+22-21 from here you can answer left to right 20+4+22-21 then 24+1=25
we know that
A perfect cube is a whole number which is the cube of another whole number or a number is a perfect cube if the cube root of that number is a whole number.
so
<u>case a)</u> 

the cube root of
is not a whole number
therefore
<em><u>The expression is not a perfect cube</u></em>
<u>case b)</u> 

the cube root of
is not a whole number
the cube root of
is not a whole number
therefore
<em><u>The expression is not a perfect cube</u></em>
<u>case c)</u> 

therefore
<em><u>The expression is a perfect cube</u></em>
<u>case d)</u> 

the cube root of
is not a whole number
therefore
<em><u>The expression is not a perfect cube</u></em>
<u>the answer is</u>

Answer:
6
Step-by-step explanation:
because 4 is below 5 so it rounds down