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Nat2105 [25]
3 years ago
13

A certain quantity decays exponentially over time. The initial quantity at t = 0 is 25,000. The quantity decays at a rate of 5%.

What is the quantity at t = 3?
Mathematics
2 answers:
7nadin3 [17]3 years ago
3 0
In order to sole the problem you need to create an equation to model what you are trying to do.
You end up with an equation looking like
25000*0.95^t
25000 is the starting value when t=0
95% is the amount remaining after the 5% decay
0.95 is being raised to the power of t to determine how many times it has decayed
When t=3 the equation should be
25000*0.95^3=21434.375
pychu [463]3 years ago
3 0

Answer:

its b on edg

Step-by-step explanation:

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You and a friend are playing a best-of-three series (first to win 2 games wins the series). You are a stronger player and have a
mariarad [96]

Answer and Step-by-step explanation:

Given that probability of you winning each game = 0.68

And probability of you winning next game = 0.81

Your friend's chance of winning/you losing would be = 1-0.68= 0.32

also his chance of winning next game = 0.73

To find probability that you would win the series given that you need to win two games to win the series

= probability that you win first game and second game+ probability that you win first game, lose second game and win third game + probability that you lose first game, win second game and win third game

= 0.68*0.81+0.68*0.32*0.68+0.32*0.68*0.81

=0.8750

Therefore probability that you would win the series = 0.8750

Note: here we found the probability of winning by adding(or) up the three possible combinations that would result in a win

6 0
3 years ago
Mary has 5370 $,she spent 2030$,what fraction of money did she spend
Artyom0805 [142]
A fraction is the same as dividing something.

2030/5370

You can simplify by dividing (by 10)

203/537 is the fraction. Hope this helps, please mark as brainliest answer if it did! :)
5 0
3 years ago
Read 2 more answers
The height of a house is 39.2 ft, a doll house replica is 2.8 ft. What is the scale<br> factor?
Tatiana [17]
I might be wrong cause I don’t removed this from 4 years ago but it should be 36.4 also plz mark brainlyiest
3 0
2 years ago
PLEASE HELP FOR TEST will mark brainiest !!
sdas [7]

Answer:

552.920307 yd^2 or 552.92 yd^2 for sigfigs

Step-by-step explanation:

basically you take the area of the entire circle and subtract the interior circle to leave the ring and that’s your answer

so the area formula of a circle is π r^2

the radius (r) is just half the diameter so the entire diameter is 48 so the radius is 24 - π(24)^2 = 1809.557368^2

then the interior circle’s diameter is 40 so the radius is 20 - π(20)^2 = 1256.637061^2

so now it’s just subtraction:

1809.557368 yd^2 - 1256.637061 yd^2 =
552.920307 yd^2 or 552.92 yd^2 for sigfigs

hope this helps :)

6 0
2 years ago
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1<br> A snail travels<br> of an inch in an hour.<br> How long will it take to travel 5 inches?
kondaur [170]

Answer:

5 hours

Step-by-step explanation:

1in per hour ×5=5 hours

5 0
2 years ago
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