All categories

3 years ago

This is extremely hard :((

Mathematics

2 answers:

vova2212 [387]3 years ago

7 0

Step-by-step explanation:

so first off the question tells us there are 90 penguin in total so that would be placed in the first box.

because we know there are 52 female penguin there must be 38 male penguin because

52+38 =90 (90 is the total amount of penguin)

the question tells us there are 6 female emperor penguin, this means that there must be 46 Humboldt penguin because 46+6=52 (total amount of female penguin)

we also know there are 5 emperor male penguin so there must be 33 male Humboldt penguin because 33+5=38

hopefully this was helpful, if it still confused just ask

Yuki888 [10]3 years ago

4 0

Answer:

This was quite easy but yeahhh all the answers are in the photo

Step-by-step explanation:

You might be interested in

Big chickens: The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams

Nataliya [291]

Answer:

a) 0.2318

b) 0.2609

c) No it is not unusual for a broiler to weigh more than 1610 grams

Step-by-step explanation:

We solve using z score formula

z-score is is z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

Mean 1387 grams and standard deviation 192 grams. Use the TI-84 Plus calculator to answer the following.

(a) What proportion of broilers weigh between 1150 and 1308 grams?

For 1150 grams

z = 1150 - 1387/192

= -1.23438

Probability value from Z-Table:

P(x = 1150) = 0.10853

For 1308 grams

z = 1308 - 1387/192

= -0.41146

Probability value from Z-Table:

P(x = 1308) = 0.34037

Proportion of broilers weigh between 1150 and 1308 grams is:

P(x = 1308) - P(x = 1150)

0.34037 - 0.10853

= 0.23184

≈ 0.2318

(b) What is the probability that a randomly selected broiler weighs more than 1510 grams?

1510 - 1387/192

= 0.64063

Probabilty value from Z-Table:

P(x<1510) = 0.73912

P(x>1510) = 1 - P(x<1510) = 0.26088

≈ 0.2609

1610- 1387/192

= 1.16146

Probability value from Z-Table:

P(x<1610) = 0.87727

P(x>1610) = 1 - P(x<1610) = 0.12273

≈ 0.1227

No it is not unusual for a broiler to weigh more than 1610 grams

8 0

3 years ago

If the sum of its number is 80 rhen find their mean

insens350 [35]

Answer: First number = 50, Second number = 30

Solution:

Assuming that the numbers are integers, let p denote the first number and q the second number.

Given, sum of the two numbers is 80.

∴ p+q = 80………………………………………………………………………………………………(1)

⇒ q = 80 - p ………………………………………………………….………………………………..(2)

Also given, 3 times the first number (p) is same as 5 times the second number (q).

∴ 3p = 5q ………………………………………………………………………………………………..(3)

Simultaneous solution of equations (1) and (3) in the two variables p and q will furnish the answer.

Method 1: Substitution Method

Substituting for q from (2) in (3),

3p = 5(80-p)

Or, 3p = 5x80 - 5p = 400 - 5p

Or, 8p = 400 (Transposing -5p from right to left and simplifying)

Or, 8p/8 = 400/8 (Dividing both sides by 8)

Or, 1.p = 50x8/8 (Factoring 400)

⇒ p = 50

Substituting for p = 50 in (2),

q = 80 - 50

⇒ q = 30

Method 2: Elimination Method

Rewriting, (2)→

3p - 5q = 0 ……………………………………………………………………………………………..…(4)

Now 3 x equation(1) - equation(4) →

3p + 3q -3p + 5q = 3x80 - 0

Or, 8q = 240

Dividing both sides by 8 and simplifying give

q = 30

Substituting for q=30 in (1),

p+30 = 80

Subtracting 30 from both sides,

p+30–30 = 80–30

Or, p+0 = 50

⇒p = 50

These values are in agreement with those obtained by method 1.

Hence, the first number = 50 and second number = 30 (Answer)

Result Verification:

p = 50, q= 30

∴ p+q = 50+30 = 80 in agreement with equation (1)

3p = 3x50 = 150

5q = 5x30 = 150

Step-by-step explanation:

7 0

3 years ago

you bought a mobile kit. you read the package that the weight of the entire mobile is 40 oz, each inch of crossbar weights 1 oz.

Nimfa-mama [501]

Answer:

See below

Step-by-step explanation:

<em>Refer to attache</em>d

Since 40 oz is total

<u>The weight of each shape indicated in the picture and calculated as:</u>

40/2 = 20 oz
20/2 = 10 oz
10/2 = 5 oz

As each inch weights 1 oz, there must be 5 of each shapes included in the kit

7 0

4 years ago

Mr. Schwanekamp bought 5 tickets to a local show and spent $26. He bought a combination of child tickets for $2 and adult ticket

Alexus [3.1K]

The system of equations is

a + c = 5

10a + 2c = 26

The number of adult tickets he bought is 2

and the number of child tickets he bought is 3

<h3>Solving system of linear equations </h3>

From the question, we are to write a system of equations

From the given information,

Mr. Schwanekamp bought 5 tickets

a represents the number of adult tickets

and c represents the number of child tickets

Thus,

a + c = 5 ----------- (1)

Also,

He spent $26 and bought a combination of child tickets for $2 and adult tickets for $10 each

Thus,

10a + 2c = 26 ------------ (2)

Hence, the system of equations is

a + c = 5

10a + 2c = 26

<em>Solving the system</em>

From equation (1)

a + c = 5

a = 5 - c ---------- (3)

Substitute into equation (2)

10(5-c) + 2c = 26

50 - 10c + 2c = 26

50 - 8c = 26

50 - 26 = 8c

24 = 8c

c = 24/8

c = 3

Substitute the value of c into equation (3)

a = 5 -c

a = 5 - 3

a = 2

Hence,

The number of adult tickets he bought is 2

and the number of child tickets he bought is 3

Learn more on Solving system of equations here: brainly.com/question/13729904

#SPJ1

6 0

2 years ago

The general solution to y'=2x(y^2+1)

Dominik [7]

Answer:

y=tan(x^2 + c₁

Step-by-step explanation:

I think might want to check

6 0

3 years ago