what is the average cost of 7 articles if 3 of them cost 30k each and the rest cost 12.5k each
TOTAL NUMBER OF ARTICLE= 7
ARTICLES FOR 30K = 3
ARTICLES FOR 12.5K = 7-3= 4
Average cost of 7 articles
To solve this problem we first call x = number of action figures, y = number of dolles. A system of two equations with two unknowns must be made to describe the problem. The system is the following:
(x + 1) + y = 13
1/2 * x = y.
Then solving the system we have that x = 8 and y = 4.
Since we know that the number of action figures is twice as many dolls plus one, then x = 8 + 1 = 9.
Thus,
dollos = 4
action figures = 9
ANYTHING FROM NEGATIVE INFINTIY AND POSTIVE INFINITY
Answer:
I believe it is C) They both involve writing a rate.
hope this helps
Step-by-step explanation:
