Answer:

Step-by-step explanation:
-This is a linear relationship problem modeled as:

where:
is the quantity at variable x
is the slope
is the constant of increment or decrement.
is the variation variable.
Given the constant 40, and 12 pages per day as the rate of change we substitute our variables in the form of the formula above as:

Answer:
n=3
Step-by-step explanation:
-4n-40=-2(7n+5)
Distribute the -2
-4n -40 = -14n -10
Add 14n to each side
-4n+14n -40 = -14n +14n-10
10n -40 = -10
Add 40 to each side
10n -40+40 = -10+40
10n = 30
Divide each side by 10
10n/10=30/10
n =3
Answer:
the answer is 32%
Step-by-step explanation:
The theorical probability is 1/4, because there are 4 possible outcome, and they are equally likely to be picked (the sectors have the same area)
The experimental probability is 3/20, becuase the red sector was picked 3 times in 20 trials.
Step-by-step explanation:
speed = Distance /Time
600 = Distance / 0.75
Distance = speed * Time
Distance = 600 * 0.75
Distance = 450 km