Answer:
c
Step-by-step explanation:
i think it c is it right
Answer:
Common difference = 2
First term = 3.
Step-by-step explanation:
3rd term = a1 + (3 - 1)d = 7 where a1 = first term and d = the common difference.
Sum of the first 12 terms = (12/2)[2a1 + (12-1)d] = 168
so 6(2a1 + 11d) = 168
So simplifying, we have the following system:
a1 + 2d = 7 ..................(A)
12a1 + 66d = 168
2a1 + 11d = 28.................(B) Multiplying equation A by - 2:
-2a1 - 4d =- -14 Adding this to equation B
7d = 14
d = 2
Now plug this into equation A:
a1 + 2(2) = 7
a1 = 7-4
a1 = 3.
Answer:
a 0.50
Step-by-step explanation:
40.25/7 = 5.75
31.50/6 = 5.25
5.75 -5.25=.50
Answer:?
Step-by-step explanation:
Since 1 Km is equal to 1000 m.
You just multiply 14 by 1000.
To get 14,000.
That's your answer.
Hope i helped :)