Answer:
<h2>|−9|, −|−9| and −|9| </h2>
Step-by-step explanation:
Before we choose all the expression that is equal to -9, <em>we must understand that the modulus of a value can return both its positive and negative value</em>. For example, Modulus of b can either be +b or -b i.e |b| = +b or -b
Hence the following expression are all equal ro -9
a) |−9| is equivalent to -9 because the absolute value of -9 i.e |−9| can return both -9 and 9
b) −|−9| is also equivalent to -9. The modulus of -9 is also equal to 9, hence negating 9 will give us -9. This shows that −|−9| = −|9| = −9
c) −|9| is also equivalent to -9. This has been established in b above.
Answer:
21/2 so 10.5.
Step-by-step explanation:
7÷2/3=21/2=10.5
hope this helps you
Answer:
25
%
Step-by-step explanation:
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Answer:
C)x^2 - 6x-6
Step-by-step explanation:
-3(x + 2) + (x – 3)x=
-3x-6+x^2-3x=
x^2 - 6x-6
