Answer
Step-by-step explanation:
cos x
add the mileage 51+69 = 120 km
add the times 4+5=9 hours
now divide the two
120/9 = 13.3 km per hour average speed
<u><em>y=1</em></u> this is because in rise/run the point rises 2 and moves to the right 1 and following this backwards leads to y=1
Answer:

Step-by-step explanation:
Use the Pythagorean theorem
let = length of ram = l
l² = 4² 18²
l² = 16 + 324
l² = 340
l = 18.4390889146
l = 18.4 ft.