If the scores on previous tests were 84, 85, 87, and 99, what is needed on the next test to have a 90 average exactly?

95

Step-by-step explanation:

Given data

Number of scores =5

84, 85, 87, and 99

Let the next score be x

Mean =90

So

Total score =84+85+87+99+x

Total score =355+x

Mean=total score /number of score

90=355+x/5

90*5=355+x

450=355+x

450-355=x

x=95

  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.

76%

step-by-step explanation:

24% are dogs and the remaining is 76% because 100-24=76