Answer:
M= 1/2(x)+7
Step-by-step explanation:
Let M = Martha.
Let X = Number of Lucy's blocks.
Martha has half the amount as Lucy - 1/2(x)
Then 7 more than that - 1/2 (x) + 7
Answer:
(3, 1/2)
Step-by-step explanation:
The x-coordinate of the midpoint of AB is the arithmetic mean of 2 and 4, which comes out to 3. The y-coordinate of the midpoint of AB is the arithmetic mean of 3 and -2, which comes out to 1/2.
Thus the midpoint of AB is (3, 1/2).
Answer:
-16
Step-by-step explanation:
A (positive * negative) is a negative. Keep that in mind ^-^
ANSWER

EXPLANATION
The general term of the arithmetic sequence is

For the first term,we substitute

to get,


Similarly


The sum of the first n-terms is given by the formula,

where l is the last term.
In this case

We substitute these values to get,



We could have also used the formula,