John has 6 more dogs than carlota. together they have 28 dogs. how many dogs does john have?

John has 17 dogs.

Step-by-step explanation:

Lets start by giving each of the names a variable, so John will be J and Carlota will be C. Then let's write out the equations that are given to us.

The first sentence says "John has 6 more dogs than Carlota."

                                           J    =   6    +    C

The second sentence says "Together they have 28 dogs."

                                           J    +    C    =   28

Now, we can substitute the first equation in the second one.

                                           (6   +    C)    +    C   =    28

And solve!

6   +   C   +   C   =   28

2C   +   6   =   28

2C   =   22

C   =   11

Knowing that Carlota has 11 dogs, we can substitue that back into the first equation to get:

J   =   6   +   11   =   17

lo ; )

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