Find two numbers if their sum is 7.2 and their difference is 2.7. pls me !

4.95 and 2.25

Step-by-step explanation:

Values of x:

x + y = 7.2

x = 7.2 - y

x - y = 2.7

x = 2.7 + y

Value of y:

7.2 - y = 2.7 + y

2y =  4.5

y = 2.25

Value of x:

x + 2.25 = 7.2

x = 4.95

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

(x+3)(x+7)

step-by-step explanation: