Find the mean of the data summarized in the given frequency distribution. compare the computed mean to the actual mean of 57.7 degrees.
low temperature (circlef) 40-44 45-49 50-54 55-59 60-64
frequency 2 4 13 7 1
the mean of the frequency distribution is degrees.

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

i think the answer is .36

step-by-step explanation:

what i did was only 2.88 divided by 8

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.