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sasho [114]
4 years ago
14

You have 32 grams of a radioactive kind of gold. If its half-life is 3 days, how much will be left after 6 days?

Mathematics
2 answers:
Digiron [165]4 years ago
6 0
D. 8 grams
The equation
Ending Amount = Beginning Amount / 2(time / half-life)
32/2^(6/3)
32/2^2
32/4
=8
Fiesta28 [93]4 years ago
4 0

Answer:

d. 8 grams.

Step-by-step explanation:

After 1 half life there is 1/2 * 32 = 16 grams left , after another half-life ( at 6 days) there is 1/2 * 16 = 8 grams left.

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Help with this exponential function!
butalik [34]

The population size after 6 years and after 8 years are 147 and 169 population respectively

<h3>Exponential functions</h3>

The standard exponential function is expressed as y = ab^x

where

a is the base

x is the exponent

Given the function that represents the population size P (t) of the species as shown;

p(t)=\frac{550}{1+5e^{-0.1t}} \\

For the population size after 6 years

p(t)=\frac{550}{1+5e^{-0.1(6)}} \\P(6)=\frac{550}{3.744}\\ P(6)=147 population

For the population after 8 years

p(t)=\frac{550}{1+5e^{-0.1(8)}} \\P(8)=\frac{550}{3.2466}\\ P(8)=169 population

Hence the population size after 6 years and after 8 years are 147 and 169 population respectively

Learn more on exponential function here: brainly.com/question/2456547

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7 0
2 years ago
A motel charges Mr. Kim X dollars for his day, Mr. Kim stayed at the motel for 12 nights, if the rate per night for a room is Wh
Blababa [14]

Answer:

$X = $12y

Step-by-step explanation:

In this question, we are asked to give an expression to represent the amount of money charged to a man who stayed in a motel for a particular number of days.

Firstly, we need to know the amount of money charged per day. This is visible from

the question and it is equal to $y.

Secondly, the number of days/night stayed is 12 days. This means that the amount of money he was charged is 12 * y = $12y

Since the amount of money charged is equal to $x, the amount to pay can be expressed in terms of y and x to be

$X = $12y

6 0
3 years ago
Thomas drove 230 miles in 4 hours. What is the ratio of miles to hour in lowest terms? 230-4 4.230 115:2 2:115 2​
alexgriva [62]

Answer:

the ratio is

miles/hour

= 230/4

= 115/2

so the ratio is 115:2

6 0
2 years ago
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Katarina [22]
I’m pretty sure it’s n=-5
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3 0
3 years ago
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What are the solutions of this equation? x^ - x - 56 = 0
NikAS [45]

Answer:

y = 0

Step-by-step explanation:

8 0
3 years ago
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