Michael just drank a cup of coffee to help him stay awake. The coffee had 110 milligrams of caffeine in it. If his body processe
s 5% of the caffeine every hour, how much will be left in 8 hours?
A. 74
B. 73
C. 72
D. 56
2 answers:
First take note on the amount he drunk and how much he processes every hour.
Now make a equation
To find the amount he processes do the following
first make the percent a decimal. to do so move the . over to the left two times.
110(.05)= 5.5
He processes 5.5 milligrams per hour now add it up
by multiplying 5.5 by 8
8(5.5)=44
So he processed 44 Milligrams in 8 hours
now subtract 44 from 110 to get whats left
110-44=66
So the answer would be 72
the answer is 74 goodluck
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First lets figure out 2 and 1/4 as a decimal
2 and 1/4 = 2.25
So now we subtract
5 - 2.25 = 2.75
She is 2.75 miles away from her starting point
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Answer:
For 7a its C i think And for 7b is 3:2
Step-by-step explanation:
hope this helps
x = 2
5(2 • 2 - 6) + 20
5(2x - 6 )+ 20 = 10
10x - 30 + 20 = 10
10x - 10 = 10
+10 +10
10 / 10x = 20 / 10
x = 2
Answer: 490
Step-by-step explanation:
Its obvious that value of n that makes 7×n/4 greater than 7 belongs to interval ]7, infinity [