Answer:
1) "fake numbers" do not exist but there are irrational numbers
2) We have negative numbers to help us understand the number system better. We need negative numbers in graphing.
Answer:
The actual length of the wall is 10.5 m
Step-by-step explanation:
Write and solve an equation of ratios to answer this question:
2 cm 3 m
--------- = ---------
7 cm L
Solve this for L by inverting both sides:
7cm L
---------- = --------
2 cm 3 m
and then multiplying both sides by 3m:
21
----- = L
2
The actual length of the wall is 10.5 m
If your asking what type of line it is, it is linear. This is because the line is decreasing evenly or by the even amount of spaces. Hope this helped!
Answer:
Step-by-step explanation:
Given:
The system of equations given are:
If an equation is multiplied by a number throughout, then the equation remains the same by multiplication property of equality. The multiplication property of equality says that if both sides of the equation is multiplied by the same number, then the new equation is equivalent to the previous equation.
For example: If 
is multiplied by 2 on both sides, then the new equation will be 
which is equivalent to .
So, from among all the choices given, the first choice represents the above mentioned property. The equation 
is multiplied by 3 on both sides. So, the equation 
is equivalent to .
The second equation 
has not been changed. So, the equivalent system of equations to the given system is:
