Answer:
The answer to your question is: C = 0.79a + 1.89r
Step-by-step explanation:
Data
Cost = C
apps = $0.79 = a
ringtones = $1.89 = r
C = 0.79a + 1.89r
Answer:
He will take 60 seconds to move from one end of the sidewalk to other.
Step-by-step explanation:
Given:
A person on a moving sidewalk,
21 feet in 7 seconds
Then 180 feet
To Find:
Total time =?
Solution:
Speed:
Speed is defined as the rate of distance covered in per unit time.
It is given as

Substituting the given values we get

Now, With this speed if he walk 180 feet then the time is

Substituting Speed and Distance we get

He will take 60 seconds to move from one end of the sidewalk to other.
Answer:
4 minutes.
Step-by-step explanation:
There are three trains that Rachel has to take to go to her job. The total time is taken by her, on average, 1 hour and 20 minutes i.e. (60 + 20) = 80 minutes.
In his journey, she walks for 15 minutes and a train journey for about 53 minutes.
Then the total waiting time for the trains is (80 - 53 - 15) = 12 minutes.
Therefore, the average waiting time, in minutes, at each of the three train stations will be
minutes. (Answer)
Answer:
it 1 I had this question before
Answer:
-573q+74
Step-by-step explanation:
8(10-69q)+3(-7q-2)
80--552q-21q-6
80-573q-6
-573q+74