The distance, s = 40t₁ where t₁ is the time to complete the outward journey.
The same distance = vt₂ where t₂ is the time to complete the return journey at speed v.
For the whole journey, 2s=60(t₁+t₂). Therefore s=30(t₁+t₂)=40t₁=vt₂.
30t₁+30t₂=40t₁, 10t₁=30t₂, t₁=3t₂, so s=120t₂=vt₂ and v=120kph.
Answer:
k=-5 or k= -13
Step-by-step explanation:
lk+9l=4
k+9=4 or k+9=-4
k=-5 or k= -13
Answer: A. y = -6x - 2
B. y = x - 12
Explanation:
Slope intercept form: y = mx + b
m = slope
b = y-intercept
I would appreciate the brainliest if this was helpful and correct! :)
Answer: -21.1°F
Step-by-step explanation:
-3.6 - 17.5 = -21.1°F
