Option D: 
is the solution to the inequality in interval notation.
Explanation:
The number line shows the interval of numbers starting from 0 and goes on.
From the number line, it is obvious that the open circle at the point 0 indicates that we don't want to include the number 0.
Hence, in interval notation, we can write that the end values not to be included can be written with a round bracket ( )
Thus, the interval can be written as
Hence, the solution to the inequality in interval notation is
Therefore, Option D is the correct answer.
1.
2x+7=2x-7
2x-2x=-7-7
0=-14
Math error.
2.
3x+8=-2x+8
3x+2x=8-8
5x=0
x=0
3.
4(x+1)=4x+4
4x+4=4x+4
4x-4x=4-4
0=0
Correct
The answer is 16 because the solution in the parenthesis is solved first which is 16 and then multiplied by 1.
Answer: x= 1.9
Step-by-step explanation:
Answer:
a = 7
b = 3 1/2
Step-by-step explanation:
if you add the equations together then the 'b' will zero out
6a = 42
a = 7
substitute 7 for 'a' to solve for 'b'
3(7) - 2b = 14
21 - 2b = 14
-2b = -7
b = 7/2 or 3 1/2
