Answer:
139
Step-by-step explanation:
57+67+45=169÷3=139
twice the sum of a number and 3, means you need to add the number to 3 first, then multiply by 2.
The correct expression would be 2(n+3)
Answer:
Step-by-step explanation:
- -11/2+27/4+(-17/4)
- (-22+27-17)/4
- (-12)/4
- -3
I might not know the answer to this question but I hope you find one
The answer is B., valid because people were chosen randomly
This would make it a valid survey
Hope this helps!
;3
