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Leno4ka [110]
3 years ago
8

In an animal hospital, 10 units of a certain medicine were injected into a dog. After 50 minutes, only 5 units remained in the d

og. Let f(t) be the amount of the medicine present after t minutes. At any time, the rate of change of f(t) is proportional to the value of f(t). Find the formula for f(t).
The formula is f(t) =​
Mathematics
1 answer:
amid [387]3 years ago
4 0

Answer:

h

Step-by-step explanation:

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A plane traveled from California and back. It took one hour longer on the way out than it did on the way back. The plane's avera
padilas [110]

Answer:

Option D is the correct answer.

Step-by-step explanation:

Let x be the one way distance and t be the time out.

Time taken for back = t-1

We have plane's average speed out was 300 mph and average speed on the way back was 350 mph.

That is

           \frac{x}{300}=t\texttt{ and }\frac{x}{350}=t-1

Dividing both equations

             \frac{\frac{x}{300}}{\frac{x}{350}}=\frac{t}{t-1}\\\\350t-350=300t\\\\t=7\texttt{ hours}

Time taken for back = t-1 = 7-1 = 6 hours.

Total time taken = 7 + 6 = 13 hours

Option D is the correct answer.

5 0
3 years ago
Read 2 more answers
100 points!!! i will award brainliest!! Lines AB, and CD are straight lines. Find x and y
Ket [755]

<O = 16 degrees   vertical angles are equal


<O + 4x+90 = 180   DC is a straight line

16 +4x +90 = 180

106 +4x = 180

4x =74

x =18.5


16 +90  +2y= 180   DC is a straight line

106+2y=180

2y = 74

y= 37

Answer : y=37

x=18.5

3 0
2 years ago
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What are the similarities between the two lines
zaharov [31]
The first blank is proportional because <span>two quantities is one in which the two quantities vary directly with one and other. </span>If<span> one item is doubled, the other, related item is also doubled. Because of this, it is also called a direct variation. </span>
6 0
3 years ago
In a study of
o-na [289]
We know that:
Mean = 82 mm and SD = 10 mm ( standard deviation )
82 - 3 * SD = 82 - 3 * 10 = 82 - 30 = 52 mm
82 + 3 * SD = 82 + 3 * 10 = 82 + 30 = 112 mm
Population between 52 and 112 mm is within +/- 3 standard deviations from the mean.
By the 66- 95 - 99.7 % rule it is: 99.7% of the test group.
0.977 * 500 = 498.5
Answer:
99.7 % of the test group have a diastolic pressure between 52 and 112 mm, or 498 men. 
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3 years ago
On a map, 1 inch equals 100 miles. If Boston is 250 miles away from Dover, how far away is it on the map
12345 [234]

Answer:

2.5 inch i think because 1 inch equals 100 miles and .5 i think it is 50 miles

7 0
3 years ago
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