A reduction and a scale factor of 1/2
Answer:
Sum of the sequence (Sn) = 33,859
Step-by-step explanation:
Given:
Sequence = 685+678+671+664+...+6
Find:
Sum of the sequence (Sn)
Computation:
a = 685
d = 678 - 985 = -7
an = 6
an = a+(n-1)d
6 = 685+(n-1)(-7)
-679 = (n-1)(-7)
97 = n-1
n = 98
So,
Sum of the sequence (Sn) = (n/2)[a+an]
Sum of the sequence (Sn) = (98/2)[685+6]
Sum of the sequence (Sn) = (49)(691)
Sum of the sequence (Sn) = 33,859
Answer:
The answer is 14 3/4. I just worked on this problem.
Step-by-step explanation:
Step-by-step explanation:
Violet bought 120 at "3 for $2".
how many groups of 3 did she buy ?
120/3 = 40 groups of 3.
so, she paid 40×2 = $80.
Harry bought 120 at "6 for $5".
how many groups of 6 did he buy ?
120/6 = 20 groups of 6.
so, he paid 20×5 = $100.
that means Violet paid 100 - 80 = $20 less than Harry.
Answer:
2
Step-by-step explanation:
Slope or gradient of a line is given by dividing change in y axis by the change in x axis. Slope is represented by m hence 
where 
is the change in y axis while 
is the change in x co-ordinates. Substituting with 6 units while 3 units substitute then the slope will be 
Therefore, the gradient is 2
