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IRISSAK [1]
3 years ago
14

A radioactive substance decays exponentially. A scientist begins with 200 milligrams of a radioactive substance. After 16 hours,

100 mg of the substance remains. How many milligrams will remain after 29 hours?
Mathematics
1 answer:
Aleks [24]3 years ago
7 0
For this case we have the following exponential equation:
 y = A (b) ^ t
 Where,
 A: initial amount
 b: decrease rate
 t: time in hours
 We then have to rewrite the equation for this problem:
 y = 200 * (0.5) ^ ((1/16) * t)
 For t = 29 hours we have:
 y = 200 * (0.5) ^ ((1/16) * 29)
 y = 56.93943174 mg
 Answer:
 
It will remain 56.94 mg after 29 hours
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Use the given information to draw a box-and-whisker plot of the data set
drek231 [11]

Answer:

The box-and-whisker plot of this distribution is presented in the attached image to this solution.

Step-by-step explanation:

A box plot gives a visual representation of the distribution of the data, showing where most values lie and those values that greatly differ from the rest, called outliers.

A box and whiskers plot shows 5 major information about the distribution of data. It shows:

- The maximum variable.

- The minimum variable.

- The Median.

- The first quartile.

- The third quartile.

Further info such as the range and Inter quartile range can then be obtained from this 5-number summary.

The elements of the box plot are described thus;

The bottom side of the box represents the first quartile, and the top side, the third quartile. Therefore, the width of the central box represents the inter-quartile range.

The horizontal line inside the box is the median.

The lines extending from the box reach out to the minimum and the maximum values in the data set, as long as these values are not outliers. The ends of the whiskers are marked by two shorter horizontal lines.

Variables in the dataset, higher than Q3+(1.5×IQR) or lower than Q1-(1.5×IQR) are considered outliers and are usually shown using dots above the top whisker or below the bottom whisker.

The required boxplot for this question is given in the attached image to this solution.

The median for the boxplot isn't provided, but it was assumed to be midway between the first and third quartile.

Hope this Helps!!!

7 0
3 years ago
Sin(5x 3 + 20) = cos(2x 3 + 14)
Ronch [10]
Whts the quiz
I don't understand the quiz
3 0
3 years ago
WORTH 100 POINTS!
zzz [600]

Answer:

7miles

equations shown in work image below

work shown on the paper with more explanations because text is hard to write equations (sorry I used km but it is miles for your problem.)

:) please give a heart for thanks

and brainliest crown :)

Step-by-step explanation:

For both d=r*t

Each bikes to others house and leave at the same time so for Tony,

11 = 30*t

t= 11/30 hours

for Gerry,

11 = 25*t

t= 11/25 hours

Comparing these, with LCD,

Tony's time is 55/150

Gerry's time is 66/150

So Tony got to Gerry's house 11/150 hours quicker than Gerry got to Tony's house.

Now they turn around and head back toward each other. If they leave at the same exact time, the elapsed time for each until they met would be the same so t (for tony) = t (for gerry), but Tony got a head start.

We start the stopwatch when Gerry turns around 11/150 hours after Tony has turned around. If Gerry's time to where they meet from Tony's house t(gerry), then Tony's time from Gerry's house is t(gerry) + 11/150

5 0
3 years ago
Read 2 more answers
This is to confusing​
erastova [34]

Answer:

<u>40%</u>  

Step-by-step explanation:

because there is 10 parts and if the 10 multipied by 10 (to find the percent) is 100 then the 4 is 40 (the unshaded part would be 60%)

Have a fantastic day!

7 0
3 years ago
Square slabs of side 40 cm are to paved in a rectangular courtyard of length 24m and breadth 16 m. Find the number of slabs requ
34kurt

Answer:

2400 slabs. If this helps, please give brainliest!

6 0
3 years ago
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