Which numbers are a distance of 4 units from 7 on the number line

3 and 11 are 4 units away from 7 on the number line

Step-by-step explanation:

Find the numbers that are a distance of 4 units from 7 on the number line

To find the number 4 units away from the right 7 on number we add 4 with 7

To find the number that is 4 units away from the left 7 on number we subtract 4 with 7

So 3 and 11 are 4 units away from 7 on the number line

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

b. they are parallel and will never intersect.