Answer the following questions correctly i will know if this is wrong. i will report any incorrect answers! criteria for getting brainliest and not getting reported: - and make sure not to post random answers points are taken away when you are reported so don't think about answering it if you want only just want points to move up. - you must put reasoning the students in social studies class are studying immigration and learned that many immigrants changed their last name when they became naturalized united states citizens. the lengths of ten students’ last names are shown in the table below. number of letters in students’ last names 5, 12, 8, 12, 11, 8, 5, 5, 7, 12 refer to the data above. what is the approximate mean number of letters in the sampled last names? round your answer to the nearest whole number,

Answer by JKismyhusbandbae: 9

(5 + 12 + 8 + 12 + 11 + 8 + 5 + 5 + 7 + 12)/10=9

To find the mean, add up all the lengths and divide by 10.

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

.

the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be