Please answer this.

c)         d)

7)    a.    kg                  b.    cm               c. 20 cm

d.   kg                  e. 10 g             f.  kg

Step-by-step explanation:

c)     -  

First we will change to improper fraction and then solve

=  

=

we will now change to mixed number

=

d)  

we will first change it to improper fraction and then solve

=

=

=

we can reduce the fraction

=

we will change it mixed number

=

7)  

a.     of 23

=     × 23

=  

=  kg

b.   of 10 cm

=   × 10 cm

=  cm

=  cm

c.   of 24cm

=       × 24 cm

6 will divide 24

=5 × 4 cm

= 20 cm

d.    of  33 kg

=    ×  33 kg

=  kg

= kg

e.   of  35 g

=     ×  35 g

7 will go into 35

=2×5 g

=10 g

f.  of  31 kg

=  ×  31 kg

= kg

=  kg

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

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.