Antti entered a $10$-kilometer race. His goal is to finish in one hour. He starts off sprinting, and completes the first $2$ kilometers of the race at an average speed of $12$ kilometers per hour. To achieve his goal of a one-hour finish time, what average speed (in kilometers per hour) must Antti maintain for the last $8$ kilometers of the race? Enter your answer as a number in decimal form, without units.

the y will be in still but your answer will be y x 3

step-by-step explanation:

jk: )

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.