answer:
10 students play chess and sudoku,
30*2/5 is 12, out of 12; the number of students that play chess,5/6 play sudoku.
So..12*5/6 is 10 and that is the number of students that play both sudoku and chess.
Step-by-step explanation:
2 3/4 hours is 165 minutes
1hr and 55 min is 115 minutes
So 2 3/4 hours is 50minutes longer than 1hr and 55 min.
Answer:
Step-by-step explanation:
Nothing to choose from.
However, to be a function the x can only be used once. It has to pass the vertical line test.
Answer: I'm pretty sure its 3x+27
Step-by-step explanation: So all you have to do is multiply everything in the parentheses by 3. So you would do 3 times x and it would be 3x and then 3 times 9 which will get you 27. After you just put it back into a equation 3x+27
What you want to do is write the numbers with similar bases, and then you can cross the bases off. Like this:
25^x+2=125^3x+4
5^2(x+2)=5^3(3x+4)
Now you can cross the similar bases off.
2(x+2)=3(3x+4)
2x+4=9x+12
7x=-8
X=-8/7