Step-by-step explanation:
given
a = - 3
3a² = 3 * ( -3) ²
= 3 * 9
= 27
The value of 3a² is 27.
Answer:
<em>Jack scored a total of -40</em>
Step-by-step explanation:
<u>Arithmetic</u>
Jack took a test where the correct answers are given as positive numbers and the incorrect answers are negative numbers.
The scores were
-65,-10,-15,20,30
The total score is the arithmetic sum of all scores, including their signs:
Total score: -65-10-15+20+30
Total score: -40
Jack scored a total of -40
1017, maybe, i hope its right, sorry if its not:)
Option D:
is the domain of the function.
Solution:
Given function is
<u>To find the domain of the function:</u>
Option A:
Substitute x = 0 in r(x).
If x = 0, then r(0) = 0
So that x ≠ 0 is false.
So, is not the domain of the function.
Option B:
Substitute x = –1 in r(x).
If x = –1, then r(–1) = 1
So that x = ± 1 is false.
So, is not the domain of the function.
Option C:
Substitute x = 1 in r(x).
It is indeterminate.
So, all real numbers are not the domain of the function.
Option D:
Substitute x = 1 in r(x).
It is indeterminate.
So, is the domain of the function.