In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?

QUESTION POSTED AT 22/02/2020 - 03:29 PM

Answered by admin AT 22/02/2020 - 03:29 PM

The day before it is full it will be half full ( bacuse it doubles in size every day)

So the answer is 47 days
Post your answer

Related questions

Joe has two empty boxes, one box is 15 inches wide, 20 inches long and 10 inches high. The second box has the same length and width but is 4 inches taller. How much additional spaces is in the box

Space in the box = volume
volume = length x width x height
box 1 volume = 15 x 20 x 10 = 3000
box 2 volume = 15 x 20 x 14 = 4200
how much space is left = box 2 - box 1 = 1200 inches

ANSWERED AT 28/03/2020 - 12:44 PM


QUESTION POSTED AT 28/03/2020 - 12:44 PM

Which of the equations has a solution of 7. y - 41 = 48 m + 6= 1 z - 2 = 5 n + 50 = 30

The answer to th question is 7.

ANSWERED AT 28/03/2020 - 12:42 PM


QUESTION POSTED AT 28/03/2020 - 12:42 PM

Which of the equations has a solution of 7. y - 41 = 48 m + 6= 1 z - 2 = 5 n + 50 = 30

The third one because you plug 7 in for z
Z-2=5 turns into 7-2=5 which is true

ANSWERED AT 28/03/2020 - 12:42 PM


QUESTION POSTED AT 28/03/2020 - 12:42 PM

You jog 6 and 2 thirds miles around a track each day. If you jogged that distance 4 times last week, how many miles did you jog?

Multiply 2/3 by 4 to get a total jogging distance of 8/3 miles. Convert it to a mixed number, and your answer will be 2 1/3 miles.

ANSWERED AT 28/03/2020 - 12:36 PM


QUESTION POSTED AT 28/03/2020 - 12:36 PM

You jog 623623 miles around a track each day. If you jogged that distance 44 times last week, how many miles did you jog?

The answer is 192075884 

ANSWERED AT 28/03/2020 - 12:35 PM


QUESTION POSTED AT 28/03/2020 - 12:35 PM

Is rolling doubles a simple event or compound event

Simple events can be defined as the single outcome of the performed experiment or it is an event which cannot be broken down any more. Compound events is the combination of two or more than two simple event. It can also be defined as an event that contains more than one sample points in it. I hope this helps you alittle bit<3

ANSWERED AT 28/03/2020 - 12:29 PM


QUESTION POSTED AT 28/03/2020 - 12:29 PM

Krypton-91 is a radioactive substance that decays very quickly. The function Q(t)=Qoe^-kt models radioactive decay of krypton-91. Q represents the quantity remaining after t seconds and the decay constant k is approximately 0.07. How long will it take a quantity of krypton-91 to decay t o10% of its origional amount? round your answer to the nearest second.

Answer:

32.894 seconds ≈ 33 seconds

Step-by-step explanation:

Function : Q(t)=Q_0 e^{-kt}

The function models radioactive decay of krypton-91.

The decay constant k is approximately 0.07.

Q_0 denotes initial amount .

We are require to find How long will it take a quantity of krypton-91 to decay to 10% of its original amount

\Rightarrow 10\%\times Q_0

\Rightarrow 0.10\times Q_0

So, we neet to find t at which Q(t)=0.10 Q_0

0.10 Q_0=Q_0 e^{-0.07t}

0.10 =e^{-0.07t}

Taking log both sides

\log0.10 =-0.07t \log e

\log0.10 = -0.07t \times 0.434294481903

-1 = -0.0304006137332t

\frac{-1}{-0.0304006137332} = t

32.894= t

Thus it will take 32.894 seconds ≈ 33 seconds a quantity of krypton-91 to decay to 10% of its original amount.

ANSWERED AT 28/03/2020 - 12:28 PM


QUESTION POSTED AT 28/03/2020 - 12:28 PM

It takes Nate four hours to paint a wall, and it takes Jill seven hours to paint the same wall. About how many hours will it will take if Nate and Jill work together to paint the wall?

Rate=1/time
N=1/4 and J= 1/7
TotalN+J= \1/4 + 1/7 = 11/28

Then:
Time = 1/rate = 1/(11/28) = 28/11 hours = 2 6/11 hours= about 2.545 hours. 

ANSWERED AT 28/03/2020 - 12:24 PM


QUESTION POSTED AT 28/03/2020 - 12:24 PM

Please help with this homework question please!!! where does a hippos habitat take place? and where and what are a hippos natural resources? Find a way to combine these to questions into a thesis like statement.

There are two species of Hippos and they prefer different types of habitat. For the Common Hippo, they live mainly in the Eastern part of Africa around the Sahara. They are the more aggressive type of Hippo and the ones that are often known to be eating the crops that villagers have planted for their own needs.

ANSWERED AT 28/03/2020 - 12:19 PM


QUESTION POSTED AT 28/03/2020 - 12:19 PM

Joel is laying pipe for a sprinkler system before he plants his lawn. The lawn is a rectangle, 15 feet long and 8 feet wide. He needs to lay a piece of pipe that will run along the diagonal of the lawn. It will divide the area of the lawn into two right triangles. What will be the length of the pipe? A. 120 feet B. 17 feet C. 23 feet D. 289 feet

Answer: B is the right answer. Diameter of the given rectangular lawn=17 feet.


Step-by-step explanation:

Given: A rectangular lawn 15 feet long and 8 feet wide.

To find the diagonal of lawn such that it will divide the area of the lawn into two right triangles. [i.e. diagonal will be the hypotenuse]

So by Pythagoras theorem of right triangles,

hypotenuse^2=perpendicular^2+base^2\\\Rightarrow\ diagonal^2=length^2+width^2\\\text{substitute the values of length and width,we get}\\\Rightarrow\ diagonal^2=15^2+8^2=225+64=289\\\Rightarrow\ diagonal=\sqrt{289}= \sqrt{17\times17}=17

Therefore diameter of the given rectangular lawn=17 feet.

ANSWERED AT 28/03/2020 - 12:10 PM


QUESTION POSTED AT 28/03/2020 - 12:10 PM

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!! WILL GIVE BRAINLIEST AND THANKS AND RATING!!!!!!!!!!!!! The line plot shows the daily high temperature in two cities over 10 days. Which conclusion can be drawn from the data? City 1 is generally much warmer than City 2. The weather is generally sunnier in City 2. City 2 had less 80 degree days than City 1. The variation in the daily high temperature is generally greater in City 1.

Answer: Option B. the weather is generally sunnier in City 2.

Step-by-step explanation: if you look at the line plots city 2 has more warm weather than city 1 does and if you also look city 2 does have a least one day with 80 degrees where as city 1 does not even have one day with 80 degrees.

ANSWERED AT 28/03/2020 - 12:10 PM


QUESTION POSTED AT 28/03/2020 - 12:10 PM

Ralph is an electrician. He charges an initial fee of $24, plus $33 per hour. If Ralph earned $189 on a job, how long did the job take?

Charge of Ralph:

Charge = $24  + $33 per hour

Let the time worked be = x.

For x hours, the cost = 33*x = 33x

Charge = 24 + 33x

24 + 33x = 189

33x = 189 - 24

33x = 165

x = 165/33

x = 5

The job took 5 hours.

I hope this helped

ANSWERED AT 28/03/2020 - 12:09 PM


QUESTION POSTED AT 28/03/2020 - 12:09 PM

Carl puts $1.10 in his penny bank every day in the month of July (31 days). His total savings was $55.00 at the end of June.What's the best estimate for Carl's savings at the end of July?

$89
because 1.10 multiplied by 31 is 34.10
you round that to 34 and add it to 55 which gives you 89

ANSWERED AT 28/03/2020 - 12:04 PM


QUESTION POSTED AT 28/03/2020 - 12:04 PM

If there are 12 fish and half of them drown, how many are there?

Um, 6. If you take 12 and you divide it by 2, you will get the answer, 6.

ANSWERED AT 28/03/2020 - 11:58 AM


QUESTION POSTED AT 28/03/2020 - 11:58 AM

An 18 oz jar of peanut butter cost $2.19. A 48 oz jar of peanut butter sells for $4.39. Which size jar is the better buy?

So you divide 2.19 by 18 and you get .12  so it cost 12 cents per ounce
then you divide 4.39 by 48 and you get .09 so it cost 9 cents per ounce

So it would be better idea to but the 48 ounce jar because it costs less oer ounce of peanut butter

ANSWERED AT 28/03/2020 - 11:55 AM


QUESTION POSTED AT 28/03/2020 - 11:55 AM

An 18 oz jar of peanut butter cost $2.19. A 48 oz jar of peanut butter sells for $4.39. Which size jar is the better buy? Why? Will give 15 points.

Ok, so we need to find the price per ounce.  If we take 2.19 and divide it by 18 that gives us 0.12 per ounce of peanut butter.  If we take 4.39 and divide it by 48 that gives us 0.09.  So we know the cheapest option is the 48 ounce jar.  Also, teachers love it if you include something like "However, if you don't need 48 ounces of peanut butter, the other jar is only 0.03 more per ounce."

ANSWERED AT 28/03/2020 - 11:55 AM


QUESTION POSTED AT 28/03/2020 - 11:55 AM

For your birthday, your parents take you to dinner and offer to let you have any 2 desserts on the menu. The restaurant, famous for its desserts, lists 10 on its menu. How many different combinations of 2 desserts can you order?

There would be like 20 bc u multiply 2 * 10  and u get 20. but u also have one with all the others. like for instance u have  a particular flavor (in this case ima say blueberry pie) u would have blueberry pie with 9 other ones. then yea.
i hope this helps :)

ANSWERED AT 28/03/2020 - 11:44 AM


QUESTION POSTED AT 28/03/2020 - 11:44 AM

Your bill from Acme Supply Company is marked "3/15, net 30." The amount of the bill is $178.95. If you pay the bill within 15 days, how much should you tender? A little help please?

Answer:

you should tender $173.58

Step-by-step explanation:

Your bill from Acme Supply Company is marked "3/15, net 30"'

We know When "3/15, net 30" is marked on any bill, it means that if the bill is paid within 15 days there is 3% discount, otherwise net pay within 30 days.

In this question it is asked that if you pay the bill within 15 days, so it is clear that you get the discount of 3% on the bill of $178.95.

Therefore we find the value less than 3% of $178.95.

= 3/100 × 178.95

= 0.03 × 178.95 = 5.3685 rounded to $5.37.

Now subtract 3% amount from the bill amount.

= 178.95 - 5.37 = $173.58

If you pay the bill within 15 days, you should tender $173.58

ANSWERED AT 28/03/2020 - 11:36 AM


QUESTION POSTED AT 28/03/2020 - 11:36 AM