Lenovo uses the zx-81 chip in some of its laptop computers. the prices for the chip during the last 4 months were as follows: month price per chip january $1.80 february $1.67 march $1.70 april $1.85 this exercise contains only parts a, b, and c. a) using a 2-month moving average, calculate the forecast for march and april (round your responses to two decimal places). month mar apr forecast $ 1.74 $ 1.69 b) using a 3-month moving average, calculate the forecast for april. the forecast for april is $ 1.72 (round your response to two decimal places). c) calculate the mean absolute deviation based on a 2-month average.

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step-by-step explanation:

the balance is found at the link

step-by-step explanation:

4 + 5 7/9= 9 7/9

step-by-step explanation:

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.