One positive number exceeds another by 7, and their product is 78. Find the numbers.
1 answer:
You might be interested in
Since the square has 4 sides, you only have to add 
four times.
The <span>perimeter of the square is: </span><span>
cm </span>
The <span>perimeter of the square is: </span><span>
Let:
x = Chemistry textbooks sold
y = Physics textbooks sold
The textbook store sold a combined total of 260, so:
The number of chemistry books sold was three times the number of physics textbooks sold, so:
Let:
Replace (2) into (1):
Replace the value of y into (2):