Answer:
(-8)2 = (-8) x 2 = - 16
-8 to the power of 2 = -8 x -8 = 64 (- x - = +)
Step-by-step explanation:
Hope this helps
Answer:
Numbers, symbols and operators (such as + and ×) grouped together that show the value of something.
Step-by-step explanation:
Examples:
• 2 + 3 is an expression
• 3 − x/2 is also an expression
So lets do it like this:
z = (X-Mean)/SD
<span>z1 = (8-12)/2 = - 2 </span>
<span>z2 = (16-12)/2 = + 2 </span>
<span>According to the Empirical Rule 68-95-99.7 </span>
<span>Mean more or less 2SD covers 95% of the values </span>
So t<span>he percentage of data points falling between 8 and 16 = 95%
</span>I hope this can help