Help with exam 11 please
1 answer:
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Answer:
The answer is "Choice D"
Step-by-step explanation:
Determining the information:
For " " and "
",
relates to
when
and
has the same cardinality. therefore, R does not have reflective:
For every "", "
" So, X not proper subset of
. So, R does not havereflexive.
R does not have symmetry:
For every "" ,then, "
" is not true because
not relate to
. So, R is not symmetric.
R does not have antisymmetric:
When relates to
and
is relate to
, then "
" and "
"
Therefore, R is anti-symmetric.
Answer:
The system of equations is
Step-by-step explanation:
Let
x ----> the number of minutes of calling time
y ----> the monthly cost of the calling plan
we know that
The linear equation in slope intercept form is equal to
where
m is the slope
b is the y-intercept
In this problem
Plan A
substitute
----> equation A
Plan B
substitute
----> equation B
therefore
The system of equations is