The problem is ;
10x+8-y
X= 2 Y=5
Every time I do it I get 23 but my teacher says I'm wrong . where am I wrong ? someone help me please .
I also get 23.
So, unless you have transcribed the problem incorrectly, the answer key is wrong. Double check that, and then show your teacher your work. Something doesn't add up, as it were...
To find the value of the expression 10x + 8 - y, you are given the values for x and y as x = 2 and y = 5. Let's substitute these values into the given expression:
10(2) + 8 - 5
Now, following the order of operations (PEMDAS/BODMAS), we first perform the multiplication:
20 + 8 - 5
Next, we perform the addition:
28 - 5
Finally, we subtract:
23
From the steps above, it seems like you have correctly evaluated the expression and obtained the value of 23. However, if your teacher claims that the answer is incorrect, there could be a few possibilities:
1. Miscommunication: Double-check the question prompt and make sure you are evaluating the correct expression or using the given values correctly.
2. Teacher's expectation: Sometimes, teachers may have specific instructions or a specific method they want you to follow. Make sure you understand your teacher's expectations, and if in doubt, ask for clarification.
3. Error in the answer key: There is a possibility that your teacher made a mistake in grading or providing the correct answer. In such cases, it may be helpful to discuss your solution with your teacher and show your steps of evaluation.
Remember, it's important to communicate with your teacher and seek clarification to resolve any doubts or inconsistencies in your work.