Acyclist rides his bike at a speed of 18 miles per hours. what is this speed in kilometers per hour? how many kilometers will the cyclist travel in 2 hours ?

about 29 km/h57.94 km

Step-by-step explanation:

The conversion factor cancels units of miles and leaves units of km.

 

The speed rounds to 29 km/h.

Multiplying the distance per hour by the number of hours, we find the distance to be ...

  (28.968192 km/h)×(2 h) = 57.936384 km ≈ 57.94 km

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle