What is the value of the expression below when x, equals, 8x=8 and y, equals, 9y=9?
5, x, plus, 10, y
5x+10y
If x equals 8 and y equals 9, then you can substitute these values into the expression 5x + 10y to find its value.
Substituting x = 8 and y = 9 we get:
5x + 10y = 5(8) + 10(9)
Now, calculate each term:
5(8) = 40
10(9) = 90
Add them together:
40 + 90 = 130
Therefore, the value of the expression 5x + 10y when x = 8 and y = 9 is 130.