Question

Using appropriate properties, find the value. Also write the name of the property used.
a) 2/ 3 x (- 5/ 7 ﴿ + 7 /3 + 2 /3 x (- 2 /7 ﴿
b) ( 1 /2 x - 1 /7 ﴿ + ( 1/ 2 x 6)
c) ( 1/ 5 x 2 15 ﴿ - ( 1 /5 x 2 /5 )
d) - 3 /5 x ( 3/ 7 + (- 5/ 6 ) )
e) ( 7/ 5 x −3 /12 ) + ( 7 /5 x 5 /12 )​

Answer 1

Step-by-step explanation:

Answer

2/5×−3/7−1/14−3/7×3/5

=2/5×−3/7−3/7×3/5−1/14

Taking common term, we get

=−3/7(2/5+3/5)−1/14

=−3/7×(2+3)/5−1/14

=−3/7−1/14

Taking L.C.M. we get,

=(−6−1)/14

=−7/14

=(−7÷7)/(14÷7)

We get,

=−1/2.

hope it helps you

Answer 2

Answer:

The following are the marks of 20 students in a class test, out of 20 . Put tally marks

and tabulate the data .

12, 15, 16, 8, 9, 10, 15, 14, 9, 11, 16, 15, 10, 18, 9, 15, 12, 14, 18, 9