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3 years ago

Four penguins would satisfy a polar bear's appetite for 12 hours. A polar bear has a

Mathematics

1 answer:

julsineya [31]3 years ago

6 0

Answer:

0.04%

Step-by-step explanation:

If there are 1000 penguins per square miles, the total number of penguins in a 10 square miles will be 1000*10 = 10,000 penguins/10square miles

Since a polar bear has a territory of 10 square miles, and can only eat four penguins within the 10square miles;

Percentage of penguins that the polar bear can eat will be expressed as;

number of penguin eaten per 10square miles/total number of penguin per 10square miles * 100

Percentage of penguins that the polar bear can eat = 4/10,000 * 100%

Percentage of penguins that the polar bear can eat = 4/100%

Hence, the percentage of penguins that the polar bear can eat in the 10 square miles is 0.04%

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PLEASE PLEASE HELP ITS MY FINAL GRADE PLEASE PLEASE

Sati [7]

Answer:

See below

Step-by-step explanation:

Given there are 56 M&M's:

Expected Value of Blue = 56(0.24) = 13.44
Expected Value of Brown = 56(0.14) = 7.84
Expected Value of Green = 56(0.16) = 8.96
Expected Value of Orange = 56(0.20) = 11.20
Expected Value of Red = 56(0.13) = 7.28
Expected Value of Yellow = 56(0.14) = 7.84

Remember to use $np$ to calculate expected value! This will especially be helpful if you are conducting a chi-squared test of independence.

6 0

2 years ago

Three-fifths of the students in a room are girls. One-third of the girls have blond hair. One-half of the boys have brown hair.

yan [13]

Answer:

a. Of all the students, $\frac{1}{5}$ are girls with blond hair.

b. Of all the students, $\frac{1}{5}$ are boys without brown hair.

Step-by-step explanation:

a. You know that $\frac{3}{5}$ of the students are girls (This means that $\frac{2}{5}$ of the studes are boys) and $\frac{1}{3}$ of these girls have blond hair.

Then, $\frac{1}{3}$ of $\frac{3}{5}$ is:

$(\frac{3}{5})(\frac{1}{3})=\frac{1}{5}$

Therefore, of all the students, $\frac{1}{5}$ are girls with blond hair.

b. You know that $\frac{1}{2}$ of the boys have brown hair.

Then, $\frac{1}{2}$ of $\frac{2}{5}$ is:

$(\frac{2}{5})(\frac{1}{2})=\frac{1}{5}$

Of all the students, $\frac{1}{5}$ are boys without brown hair.

8 0

3 years ago

In a class of 30 students there are 17 girls. two students are picked randomly to represent the class in the SRC. determine the

Alla [95]

Answer:

See below in bold,.

Step-by-step explanation:

There are 30-17 = 13 boys in the class.

a. Prob(First is a boy ) = 13/30 and Prob( second is a boy = 12/29).

As these 2 events are independent:

Prob( 2 boys being picked) = 13/30 * 12/29 = 26/145 or 0.179 to the nearest thousandth.

b. By a similar method to a:

Prob ( 2 girls being picked) = 17/30 * 16/29 = 136/435 = 0.313 to the nearest thousandth.

c. Prob (First student is a boy and second is a girl) = 13/30 * 17/29 = 221/870.

Prob ( first student is a girl and second is a boy) = 17/30 * 13/29 = 221/870

These 2 events are not independent so they are added:

Prob( one of the students is a boy) = 2 (221/870 = 221/435 = 0.508 to the nearest thousandth.

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3 years ago

Solve for n. n-26 = -13 n=1

Paraphin [41]

Answer:

I believe n equals 13.

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

50 POINTS!!!!

amid [387]

The answer is 503.39

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3 0

3 years ago