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Alinara [238K]
3 years ago
10

The half-life of a drug is 4 hours. A patient has been taking the drug on a regular basis for a few months and then discontinues

taking it. The concentration of the drug in a patient's system is 120 ng/mL when the patient stops taking the medication. Complete the table, rounded to the nearest tenth of a ng.

Mathematics
1 answer:
brilliants [131]3 years ago
7 0

Answer:

Step-by-step explanation:

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The diagonal of a square has length 10√2. Find the area of the square.
alex41 [277]

Answer: A = 100 square unit

Step-by-step explanation:

The formula for calculating the area of a square when the diagonal is given is :

Area = d^{2} / 2

That is :

A = \frac{(10\sqrt{2})^{2}}{2}

A = \frac{100(2)}{2}

A = 100 square unit

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2 years ago
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CaHeK987 [17]

Answer:

Third option. I am sure it!

Step-by-step explanation:

Mark other guy brainliest. He's a great answer and he helped me before

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Answer:3

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2 years ago
If you take out a loan for $4,000 and you will owe $4,920 after 2 years, what is the rate of simple interest? Express your answe
11111nata11111 [884]

Answer:

11.5

Step-by-step explanation:

Simple interest formula:

I=P\cdot r\cdot t,

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I = interest

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r = rate

t = time

In your case,

P = $4,000

I = $4,920 - $4,000 = $920

t = 2 years

So,

920=4,000\cdot r\cdot 2\\ \\r=\dfrac{920}{2\cdot 4,000}=0.115

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3 years ago
A boat travels 3 hours downstream at r miles per hour. On the return trip, the boat travels 5 miles per hour slower and takes 4
Rudik [331]

This is a simple one.

We dont know how fast it is going downstream, but we do know it took 3 hours to reach the destination. Now, saying that, when coming back we know it took 4 hours(an hour longer than what we took to get there), and we also know we were moving 5 miles slower per hour. If we think a bit, we can see that moving 5 miles slower made us take a whole hour. Making me believe that when we were headed to our destination we were moving at 20 miles per hour, and when we were headed back, we moved at 15mph(20-5)

To check that this was correct, we can just simply check, "okay so from our point to our destination we traveled 60 miles in total. if we went 20 miles an hour, in 3 hours(3×20) we would be at our destination, and if we traveled at 15 miles an hour, it would take us 4 hours to get back to our starting point (4×15)

HOPE THIS HELPED. PLEASE CONSIDER LEAVING A <em><u>5</u></em><em><u> </u></em><em><u>STAR</u></em><em><u>,</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>HEART</u></em><em><u> </u></em><em><u>AND</u></em><em><u> </u></em><em><u>MAKING</u></em><em><u> </u></em><em><u>THIS</u></em><em><u> </u></em><em><u>THE</u></em><em><u> </u></em><em><u>BRAINLIEST</u></em><em><u> </u></em><em><u>ANSWER</u></em> THAT WOULD BE SO VERY MUCH APRECIATED!!!!

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