Question

How do I do these 2 questions

Answer 1

Q10/

6 m/s = 21.6 km/h

6m/s =3.6 × 6 = 21.6 km/h

** 1m/s = 3.6 km /h

`1 (m)/(s) = (1)/(1000) km * (60s)/(1 \: min) * (60 \: min)/( 1\: h) \\ \\ = (1)/(1000) * (3600)/(1) \\ \\ = (3600)/(1000) = 3. 6\: km/h`

Q14/

7x -1 =3x+7

7x - 3x = 7 +1

4x =8

x = 8/4

x =2

I hope I helped you^_^