Answer:
The answer to your question is
a) t₁ = 6 h
b) t₂ = 3h
Step-by-step explanation:
Data
v1 = 12 mph
v2 = 24 mph
total time = 9 h
Process
1.- Write equations to solve the problem
d₁ = v₁t₁ ------------------ Equation l
d₂ = v₂t₂
d₁ = d₂ because the distance is the same in both directions
t₁ = t₁
t₂ = 9 - t₁
d₂ = v₂(9 - t₁) -------------- Equation 2
- Equal both equations
v₁t₁ = v₂(9 - t₁)
- Substitute v₁ and v₂
12t₁ = 24(9 - t₁)
- Solve for t₁
12t₁ = 216 - 24t₁
12t₁ + 24t₁ = 216
36t₁ = 216
t₁ = 216 / 36
<u> t₁ = 6 h</u>
- Calculate t₂
t₂ = 9 - 6
<u>t₂ = 3 h</u>
3=21/(x+5)
Cross multiply
3(x+5)=21
Divide 3
X+5 = 7
Subtract 5
X= 2
X intercept is when y = 0 so 4x = -20, x=-5
y intercept when x = 0 so -5y = -20, y=4
Answer:
1/30
Step-by-step explanation:
Gia has read 5/6 if the book so theres 1/6 left
divide 1/6 by 5 days and its 1/30
