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2 years ago

PLS HELP ME AyO HELP LOL OLOLOLOLOLOlOLO(l9 BRUH

Mathematics

2 answers:

QveST [7]2 years ago

7 0

0.75 or 3/4 that’s your answer as a decimal and fraction :)

Levart [38]2 years ago

4 0

Answer:

3 i think

Step-by-step explanation:

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3 years ago

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)$

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2 years ago

Elaine has a $25 gift card. She uses the card each

Anit [1.1K]

Answer:

$0.50

Step-by-step explanation:

multiply 3.50 by 7 and you get 24.5. $25.00-$24.50= $0.50

8 0

3 years ago

Read 2 more answers