Try to rewrite the equation;
You know that 5 can be written as log3(3^5)
log3(3^5)=log3(x^2+18) <-- you can now cancel out log3
3^5=x^2+18
243-18=x^2
225=x^2
√225=x
+-15=x
You see that even if x is negative, the squared will always give a positive answer. Therefore, +15 and -15 are both possible answers.
Hope I helped :)
Answer:
The correct option is C, i.e., .
Explanation:
It is given that the total number of students in cafeteria should be less than 264. The administrators want there to be 13 less rows than the number of desks in each row.
Let the number of desks in each row be d.
Since administrators want there to be 13 less rows than the number of desks in each row. So the number of row is d-13.
In one row the number of desks is d. So in (13-d) rows the number of number of desks is d(d-13).
Since the total number of students in cafeteria should be less than 264. So we get,
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Step-by-step explanation:
See the attached photo for the answer
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9514 1404 393
Answer:
A. 9
Step-by-step explanation:
The exterior angle is equal to the sum of the remote interior angles.
10x -19 = (3x +2) +(5x -3)
2x = 18 . . . . . . . . . . . . . . . add 19-8x to both sides, simplfy
x = 9 . . . . . . . . . . . divide by 2
Te difference between the two categories is 960.
The fixed expenses are: mortgage, car and insurance
1300 + 275 + 60 = 1635
The variable expenses are: food, entertainment, clothing
320 + 280 + 75 = 675
Subtracting those gives a value of 960.