Answer:
95 degrees
Step-by-step explanation:
1/2 of a circle is 180 and 180-103=77 and on the other half 72 + 13= 85 and add THAT TO 103 to get 188+77= 265 and 360-265= 95
It will take 7.5 hours for only 40% of the caffeine to remain in his body.
Step-by-step explanation:
Half-life (symbol t1⁄2) is the time required for a quantity to reduce to half of its initial value.
The half-life of caffeine is 5.7 hours.
It means that if we have 10 ounces of caffeine. After 5.7 hours, the remaining caffeine will be equal to 5 ounces and so on.
And the decaying speed depends on the initial amount of the substance.
In the given question.
t1⁄2 = 5.7 hours
Initial amount = N(i) = 16 ounces
Remaining amount after time t = N(t) = 40% of 16 = 6.4 ounces
time t = ?
Using the following formula for remaining amount of substance after time t:
N(t) = N(i)*(0.5)^(t/t1⁄2)
we can find the time t
putting the values in the formula given above, we get:
Taking natural log on both sides:
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To solve this problem all you need to do is multiply how many gallons of water Lena put in the bucket(4.5 gallons) times how much one gallon of water weighs(8.35 pounds).
(4.5)(8.35)=37.58 lbs
Answer:
A
Step-by-step explanation:
The slope in a slope-intercept equation is the coefficient of x.
In A, the slope is a 4/3, which is positive
In B, the slope is a -5, which is negative
Answer:B
Step-by-step explanation: