Cora weighs 4 new, identical pencils and a ruler. The total weight of these items is 55 grams. She weighs the ruler by itself and it weighs 19 grams. How much does each pencil weigh?

total weight - weight of ruler

55-19= 36g

so the pencils weigh 36g in total

but there are 4 pencils and they asked how much each pencil weighed.

so we say 36÷4= 9g

each pencil weighs 9g

Step-by-step explanation:

check: 9+9+9+9+19 = 55g

f

step-by-step explanation:

f

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.