What we want to draw is the half closed interval:
I= [-5, 4) excluding 0,
as the union of 2 different intervals say a and b.
Let a be the interval containing the smallest value.
Then the smallest value of a is -5, and the largest possible value of a is 0, not included, if we want to write a as an interval, without "gaps", or "holes".
So a=[-5, 0)
similarly, b=(0, 4).
Answer: [-5, 4)=[-5, 0)∪(0, 4)
Answer: 
Step-by-step explanation:
For this exercise it is important to remember the multiplication of signs. Notice that:
In this case you have the following expression:
The steps to solve it are:
Step 1: You must solve the addition inside the parentheses:
Step 2: Now you must solve the multiplication:
Step 3: Finally, you must solve the subtraction. Therefore, you get:
Answer:
13/2
Step-by-step explanation:
-8 minus 18 gives you 26
then, -20 minus -16, which is equal to +16 gives you -4
after that you would simplify all the way to 13/2
Answer:
y=9/4x-20
Step-by-step explanation:
Do the parallel line equation
7=9/4(12)+b
Solve for b
7=9×12÷4+b
7=27+b
subtract 27 to both sides
-20=b
Parallel lines have the same slope
y=9/4x-20
