Answer: It is the same distance from zero as the number she tells you.
Step-by-step explanation:
For this exercise it is important to remember the definition of opposite numbers.
Opposite numbers are defined as those numbers that are in opposite positions on a number line, but their distance from zero is the same. Then, one of them is positive and the other one is negative.
The sum of opposite numbers is zero.
For example, the following numbers are opposite:
and 
and 
and 
Therefore, if Shanika says the opposite of a rational number, you can conclude that the number she is thinking is the same distance from zero as the number she tells you.
The answer is nine because eighteen subtract nine is nine
Answer:
Step 2 because Richard multiply the powers of same base in denominator instead adding powers of same base.
Step-by-step explanation:
We are given that Richard simplified an expression in threes steps
We have to find the incorrect step in simplification of Richard
Step 1: all the exponent are multiplied by 3

Step 2:The exponents in the denominator are multiplied

Step 3:The exponents of the same base are subtracted during division


Richard makes mistake in step 2 when we multiply then power of same base should be added but Richard multiply the powers of same base in denominator.
Answer:
Supplementary lines are 180 and are two angles that can add up to 180 degrees make a staraight angle
Step-by-step explanation:
One dot on 3 and 4 and two dots on 5 and 6