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3 years ago

About 97,221 adult penguins live on Brash Island. Of those penguins,

Mathematics

1 answer:

lions [1.4K]3 years ago

4 0

Answer:

94, 956

Step-by-step explanation:

Given that of the 97221 adult penguins in the island, 97.67% of them being Adélie penguins then it means to get the actual number of Adélie penguins will be rhe product of percentage and the total population.

Therefore, Adélie penguins will be

$\frac {97.67}{100}\times 97221=94,955.7507$

Since Adélie penguins can't be in decimal, this is rounded off to be 94, 956

Therefore, the number is 94, 956

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Fourteen more than a number is eighteen.

AVprozaik [17]

Answer: 4

Step-by-step explanation:

18-14=4

3 0

3 years ago

The capacity of an elevator is 12 people or 2088 pounds. the capacity will be exceeded if 12 people have weights with a mean gre

boyakko [2]

suppose the people have weights that are normally distributed with a mean of 177 lb and a standard deviation of 26 lb.

Find the probability that if a person is randomly selected, his weight will be greater than 174 pounds?

Assume that weights of people are normally distributed with a mean of 177 lb and a standard deviation of 26 lb.

Mean = 177

standard deviation = 26

We find z-score using given mean and standard deviation

z = $\frac{x-mean}{standard deviation}$

= $\frac{174-177}{26}$

=-0.11538

Probability (z>-0.11538) = 1 - 0.4562 (use normal distribution table)

= 0.5438

P(weight will be greater than 174 lb) = 0.5438

8 0

3 years ago

A rectangular tank measures 14 cm by 9 cm by 10 cm. What is the volume of the tank in cubic centimeters?

geniusboy [140]

1260cm cubed.........…........

7 0

3 years ago

A state offers two lottery games, WinOne and PlayBall. Both games cost $2 per ticket.

uysha [10]

In this question, both tickets cost 2$ per ticket.
The answer to this question would be: $0

In WinOne scenario, you need to match a ticket that has to pick from A-J(10 possibilities) and 0-9 (10 possibilities). The chance to win would be: 1/10* 1/10= 1/100

The expected value must be:
E= chance to win * win amount - ticket price
E= 1//100*$200 - $2= $2-$2= 0

8 0

3 years ago

A kite is flying 12 ft off the ground. Its line is pulled taut and casts an 8 -ft shadow. Find the length of the line. If necess

LenKa [72]

Answer

14.4 ft~

Step-by-step explanation

A kite is flying 12 feet off the ground, therefore the height is 12 (assuming the line is tied to the ground if a person is holding the line then the height would be less)

Assuming the sun is positioned in such a way that the shadow represents a horizontal distance. Horizontal distance of shadow = 8

Use Pythagoras Theorem

Where a^2 + b^2 = c^2

8^2 + 12^2 = 208

Square root 208 = 14.4~

~ Hoodini, here to help :)

6 0

3 years ago