Answer:
4.6 hours
Step-by-step explanation:
we first need to calculate the total distance he covered and total time taken whole for the journey.
Distance= speed X time
time = Distance/speed
let the total distance be X. he covers 2/5 if the journey first.
2/5 = 0.4
Time = 0.4x/45 hours
the remaining journey is 3/5x
he covers 1/3 X 3/5= 0.2x
time taken = 0.2/90 X hours
the remaining distance = 100× 1.2 = 120km
we add 0.4x + 0.2x to get the fraction he had covered
0.6x.
the remaining distance was X - 0.6x = 0.4 X
thus 120 km represents 0.4x of the journey
we calculate now the value of X
0.4x = 120
X = 300km
Total time taken = 0.4x/45 + 0.2/90 + 1.2 hours
replace X to get time
2.7 hours + 0.7 hours + 1.2 hours
= 4.6 hours
Answer:
18÷9=2
Step-by-step explanation:
Answer: slope = ∞ infinito
Step-by-step explanation:
We can use slope formula to find the slope of a line that passes through two points (x₁ , y₁) and (x₂ , y₂)
<h3>m = ∆y/∆x = y₂-y₁/x₂-x₁ </h3>
Given points are: G(x₁ , y₁) = (5,5) and H(x₂ , y₂) = (5,-5)
Substituting these two known points in the slope formula, we have:
m = (-5-5)/(5-5) = -10/0 = ∞ infinito
Therefore, the slope of this line = ∞ infinito
Answer: slope = ∞ infinito
<h2><em>Spymore</em></h2>
Equation of a line: y=mx+b
m=slope(-1)
b=y-intercept(-7)
y=-1x-7 or y=-x-7