Bruce's three measurements are 19cm, 20cm, 23cm. calculate the average value of his measurements and express the answer with the correct number of significant figures

Bruce's three measurements are 19cm, 20cm, 23cm. calculate the average value of his measurements

We are given:

Bruce has three measurements measuring 19cm, 20cm, 23cm.

We need to find the average value of Bruce's measurements.

We know the formula of average is:

Where:

is the sum of observations

is the number of observations

average value of Bruce's measurements is:

Hence the average value of Bruce's measurements is 21cm

step-by-step explanation:

. your answer will contain x - and y -terms. (1 point) x ( ¿¿ 2 − 7 ) 2 +( y 2 − 9 ) 2 √ ¿ 12. what is the distance from the directrix (the crocodile river) to the point ( x , y )? write this equation. your answer will contain a y -term.