jackydtb
30.06.2019 •
Mathematics
Find the solution of 3 times the square root of the quantity of x plus 5 equals negative 9, and determine if it is an extraneous solution
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Ответ:
x = 4, it is an extraneous solution.
Step-by-step explanation:
Translating the given statement, we get the following equation:
Dividing both sides by 3, we get:
Now we will take square on both sides of the equation to get rid of the square root to get:
So we are left with:
Therefore, the solution is 4.
Also, it is an extraneous solution because the equality is not met by substituting x = 4 in the original equation:
Ответ:
This is how much each roll costs.
0.22 x 30 = 6.6$