Simplify each equation

(7) 5(m + 3) + 2(m + 8)

(8) 9(x + 2) + 4(5 + x)

Step-by-step explanation:

For nø. 7

5(m + 3) + 2(m + 8)

= 5m + 15 + 2m + 16

= 7m + 31

For nø 8

9(x + 2) + 4(5 + x)

= 9x + 18 + 20 + 4x

= 13x + 38

Hope it will help :)

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

the answer is 489

step-by-step explanation: