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Andrew [12]
3 years ago
12

Mr. D’Alton made some radium in his lab. He used kg of the radium every time he 5 2ran his experiment. If he did the experiment

four times and had kg left, how much2 3 1radium did Mr. D’Alton make at first?
Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0

Answer:

no lo sé por eso te lo escribo en español

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Pls help find the amount at the end of 6 hours
marshall27 [118]

Answer:

A. 7,348

Step-by-step explanation:

P = le^kt

intitial population = 500

time = 4 hrs

end population = 3,000

So we have all these variables and we need to solve for what the end population will be if we change the time to 6 hours. First, we need to find the rate of the growth(k) so we can plug it back in. The given formula shows a exponencial growth formula. (A = Pe^rt) A is end amount, P is start amount, e is a constant that you can probably find on your graphing calculator, r is the rate, and t is time.

A = Pe^rt

3,000 = 500e^r4

now we can solve for r

divide both sides by 500

6 = e^r4

now because the variable is in the exponent, we have to use a log

log_{e}(6) = 4r

ln(6) = 4r

we can plug the log into a calculator to get

1.79 = 4r

divide both sides by 4

r = .448

now lets plug it back in

A = 500e^(.448)(6 hrs)

A = 7351.12

This is closest to answer A. 7,348

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3 years ago
Tim wants to build a rectangular fence around his yard. He has feet of fencing. If he wants the length to be twice the width, wh
Citrus2011 [14]

Answer:

how many feet of fencing does he have?

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Step-by-step explanation:

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3 years ago
What is the slope of the line passing through the points (7, 10) and (5, 16) ?<br> Thank you
butalik [34]

Answer:

m=-3

Step-by-step explanation:

m=y2-y1/x2-x1

m=16-10/5-7

m=6/-2

m=-3

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2 years ago
Write as a decimal 0.068%
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0.068\% =0.00068
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Darío buys applesauce cups for a family reunion. He needs 23 cups, and he buys them in packs of 6. How many packs does Dario nee
ioda

Answer:

He needs four packs.

Step-by-step explanation:

6*4=24 there is 23 so he will need 4 packs in total.

3 0
3 years ago
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