If isme estimated that there are 50 students in the seventh grade class but there are actually 40 what is isme’s percent error?

The percent error is 25 %

Solution:

Given that it is estimated that there are 50 students in the seventh grade class, but there are actually 40

To find: percent error

Percent error is the difference between a measured and known value, divided by the known value, multiplied by 100%

The formula for percent error is given as:

Here, exact value = 40 and approximate value or estimated value = 50

Substituting the values in above formula,

Thus the percent error is 25 %

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.