Please answer with clear instructions so that i can apply this to other questions. Solve the equation 2x2 + 6 = 7x by factorisation

x=1.428

Step-by-step explanation:

2×2+6=7x

According to the BODMAS rule the multiplication should be done first. thus,

(2×2)+6=7x

=4+6=7x

then add 4 and 6

4+6=7x

10=7x

then divide 10 by 7 inorder to find X

10=7x

x=10/7

=1.428

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m