Answer:
f=2/6
Step-by-step explanation:
Write an equation
f/(-2/3)=-1/3
Solve
f=(-1/3)*(-2/3)
f=2/6
First three hours = 85 * 3 = 255
last two hours = (85/2) * 2 = 85
total cost = 340
The angle is 75.52 degrees
If there is a vector with the form a i + b j, the cosine of the angle between the given vector and the positive direction of the x - axis is calculated as:
cos θ = 
So, given the vector i+
, the cosine of the angle between the vector and the x-axis is:
cos θ = 0.25
Therefore, the angle θ between the given vector and the positive direction of the x-axis is:
θ = cos-1(0.25) = 75.52
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Answer:
First step=13x+7x=18+42
Step-by-step explanation:
13x-42=18-7x
First step
It is to collect like terms of the equation
13x+7x=18+42
20x=60
x=60/20
x=3