B) 30 minutes
C) 40 minutes
D) 50 minutes
Answer:
C) 40 minutes
Step-by-step explanation:
It takes Marcus 8 minutes to run a mile. In 40 minutes, Marcus would have ran 5 miles.
1 mile = 8 minutes
5 miles x 8 minutes = 40 minutes to run five miles
Answer:
1,500 students
Step-by-step explanation:
Since in the question it is mentioned that 35% of students get less than 8 hours of sleep
And, there is a group of 2,000 students
Now the number of students who get eight or more hours per night sleep is
Suppose the total percentage be 100
Now the students more than 8 hours is
= 100 - 35%
= 0.75
And, the total students is 2,000 students
So, the number of students who get eight or more hours is
= 2,000 students × 0.75
= 1,500 students
The same is to be considered
Answer:
HI,
Step-by-step explanation:
12 mod 13=12
Hi there!
For this, we need to use an exponential function. This is because it constantly takes 10% of what is left, not just 10% of the total. The formula for an exponential function:
Where is the original value, is the rate of change, and is the time. We know the original value is 120 milligrams. The rate of change is 90%, as after every hour there is 90% of what there was previously remaining. Finally, we are looking for how much is remaining after 10 hours, so 10 is the time.
Plugging this all in, we get:
Now, solving:
Thus, after rounding, we get that 41.8 milligrams of caffeine will be left in 10 hours.
Hope this helps! Feel free to let me know if you have additional questions about this problem.
Answer:
i think it D
Step-by-step explanation:
positive