On the graph, it shows that the shortest meeting has lasted for 1/4 of an hour. An hour has 60 mins, you know it the shortest will be 15 minutes.
If its for any other number that you do not know, you can list as a proportion:
1/4 = x/60 (1 and x are on the top of the fractions)
Cross multiply: 1 * 60 = 60
Then divide by the number on the opposite corner of x: 60/4
x = 15
Answer:
Amount charged for downloading individual songs = x dollars
Amount charged for downloading an entire album = y dollars
In respect to person A:
6x + 2y = 25.92
3x + y = 12.96
y = 12.96 - 3x
In respect to person B:
4x + 3y = 33.93
Putting the value of y from the first equation in the second, we get
4x + 3(12.96 - 3x) = 33.93
4x + 38.88 - 9x = 33.93
- 5x = - 4.95
x = 0.99 dollars
Putting the value of x in the first equation, we get
y = 12.96 - 3x
= 12.96 - 2.97
= 9.99 dollars
9.52 per hour for 6 hours 2 days. there is a total of 12 hours in total so divide 114.24 by 12 to get 9.52.
Answer:
the mean number of days absent is 0.72 days ( since 0.72 is not an integer, we can say that is the average number of days absent is close to 1 day)
Step-by-step explanation:
given a random variable X= number of days absent , the mean is calculated as:
mean = ∑ x * p(x) , for all the x possible
where x = number of days absent and p(x) the probability of "x" number of days absent
therefore
mean = 0 * 0.60 + 1 * 0.20 + 2*0.12 + 3*0.04 + 4* 0.04 + 5* 0.00 = 0.72 days
Answer:
52a² - 39a
Step-by-step explanation:
Step 1: Write out expression
3a(4a - 5) - 4a(6 - 10a)
Step 2: Distribute
12a² - 15a - 24a + 40a²
Step 3: Combine like terms (a²)
52a² - 15a - 24a
Step 4: Combine like terms (a)
52a² - 39a