Answer:
a) The possible solutions are:
x=7 and x=-3
b)The extraneous solution
is x=
Step-by-step explanation:
The last step gives us the possible solutions.
By the zero product property,
This implies that:
The original equation is
We substitute x=-3 to get;
This not true, therefore x=-3 is an extraneous solution.
We substitute x=7
Therefore x=7 is the only solution.
Answer:
3(3+7)
Step-by-step explanation: you factor out the greatest common multiple. 3 times 3 is 9 and 3 times 7 is 21
-2x + 9y = 5, where x = 11
Plug in 11 for x in the equation:
-2(11) + 9y = 5
Solve for y:
-22 + 9y = 5
9y = 27
y = 3
Answer:
480
Step-by-step explanation:
8×60=480 minutes.
Answer:
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