evaluate 2x+7y/30 for x=15 and y=3
plug in your x and y values into the equation and solve.
2(15)+7(3) / 30.
What didn't you like about Marie's answer ?
I would have done it the same way.
http://www.jiskha.com/display.cgi?id=1314650134
looks like Marie did mess up at the end
30 + 21/30
= 307/10 or 30.7 or 30 7/10
To evaluate the expression 2x + 7y/30 for x = 15 and y = 3, follow these steps:
1. Replace x with 15 and y with 3 in the expression.
- 2(15) + 7(3)/30
2. Perform the multiplications first:
- 30 + 21/30
3. Next, add the two terms:
- 30 + 0.7
4. Finally, calculate the sum:
- 30.7
Therefore, when x = 15 and y = 3, the value of 2x + 7y/30 is 30.7.