Answer:
The statement
is a contingency.
The statement
is a contradiction.
Step-by-step explanation:
A tautology is a proposition that is always true.
A contradiction is a proposition that is always false.
A contingency is a proposition that is neither a tautology nor a contradiction.
a) To classify the statement
, you need to use the logic laws as follows:

by the logical equivalence involving conditional statement.
by the Commutative law.
by Distributive law.
by the Commutative law.
by the Negation law.
Therefore the statement
is a contingency.
b) To classify the statement
, you need to use the logic laws as follows:

by the logical equivalence involving conditional statement.
by the Commutative law.
by Distributive law.
by the Negation law.
Therefore the statement
is a contradiction.
Answer:
Explanation:
I hope you understand this
476miles per 14gallons of gas
is the same as 476 / 14 = 34
so 34miles / 1gallon of gas.
34x =578 where x is the number of gallons
578 / 34 = 17gallons
23000 which is it in scientific notation
There are many ways to do this.
One way could be 0.25x+7.00=27