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Rainbow [258]
3 years ago
12

Free points over here 20+20=

Mathematics
2 answers:
zvonat [6]3 years ago
7 0

Answer:

9348283848384848383838482

Olegator [25]3 years ago
3 0

Answer:

20+20=40

Step-by-step explanation:

thank you so much! have a great day :)

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If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time ca
aleksandr82 [10.1K]

Answer:

(a)8.0mg

(b)36.87 hours

(c)-0.168

Step-by-step explanation:

The amount of Valium in that person's bloodstream at any time can be modeled with the exponential decay function A ( t ) = 10 e^{ -0.0188 t (t in hours)

(a)After 12 Hours

A ( 12) = 10 e^{ -0.0188*12}\\=7.98\\\approx 8.0 mg $(to the nearest tenth of a milligram)

(b)If A(t)=5mg

Then:

5= 10 e^{ -0.0188 t}\\$Divide both sides by 10\\0.5=e^{ -0.0188 t}\\$Take the natural logarithm of both sides\\ln (0.5)=-0.0188 t\\t=ln (0.5) \div (-0.0188)\\$t=36.87 hours (to two decimal places.)

(c)

A ( t ) = 10 e^{ -0.0188 t}\\A'(t)=10(-0.0188)e^{ -0.0188 t}\\A'(t)=-0.188e^{ -0.0188 t}\\$At 6 hours, the rate at which the amount of Valium is decaying therefore is:\\A'(6)=-0.188e^{ -0.0188*6}\\$=-0.168 ( to three decimal places)

3 0
3 years ago
What is the value of 3 3/8+1/2 ÷ 4/5 × 2​
Strike441 [17]

Answer:

ans: 37/ 32

Step-by-step explanation:

(33/8 + 1/2 ) / ( 4/5 ×2)

= { ( 33 + 4) / 8} / ( 8 / 2)

= 37/ (4×8)

= 37 / 32

6 0
3 years ago
Who wants my girl? if yes put it down​
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Answer:

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Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
Solve for x as a positive and negative...<br><br> | 3x - 1/2 | = 3/2
DochEvi [55]

Answer:

x = 2/3                                           x = -1/3

Step-by-step explanation:

| 3x - 1/2 | = 3/2

We have two solutions, one positive and one negative

3x-1/2 = 3/2     and 3x-1/2 = -3/2

Add 1/2 to each side

3x-1/2+1/2 = 3/2+1/2     and 3x-1/2+1/2 = -3/2+1/2

3x = 4/2                                   3x = -2/2

3x = 2                                         3x = -1

Divide by 3

3x/3 = 2/3                                     3x/2 = -1/3

x = 2/3                                           x = -1/3

3 0
3 years ago
Evaluate the expression and put your answer in fraction form
DiKsa [7]

Answer:

140/3

Step-by-step explanation:

(28/3)*5

140/3

6 0
4 years ago
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