Answer:
5(5+8)
Step-by-step explanation:
I’m pretty sure 3+9/4 is correct
Answer:
12-2(n-1).
Step-by-step explanation:
It can be written 12-2n+2=14-2n, so that when n=1, the 1st term is 14-2=12. The 5th term is 14-10=4; the 6th is 14-12=2.
Since addition is commutative, she can add anyway she wants.
(17+51)+(10+13)
(51+10)+(17+13)
Hope this helps.
Answer:
The average of students in the two classes who went on the field trip is .
Step-by-step explanation:
Average =
Average of students in the two classes =