Answer:
A+B=B+A
B+0=B
E-C=E+(-C)
Step-by-step explanation:
The value of A is 9. This is because 40-13= 27
3x?=27 3x9=27
Answer:
16x
Step-by-step explanation:
4x + 12x = 16x
You may recall that you can't take the square root of a negative number (if you want a real number). So, the area under the square root, also known as the radicand, must be zero or positive. This is how we restrict the domain.
We write the inequality

.
B
The first one hopes this helps