Mathematics High School

Cory is a bird watcher he estimates that 30% of the birds he sees are american robins, 20% are dark eyed juncos and 20% are slnc sparrows. he designs a simulation.

Answers

Answer 1

Answer:

I think C. 0.75

Step-by-step explanation:

Answer 2

The probability of seeing at least one robin in the next 5 birds is 0.75

How to determine the probability?

The representations are given as:

American robins = 0 to 2Dark eye juncos = 3 and 4Song sparrows = 5 and 6Others = 7 to 9

Using the above representations, the numbers that represent an occurrence of seeing at least one robin in the next 5 birds are:

05716 16803 32177 92290 72794 14333 79019 05943 77510 74051 87238 86481 94036 12749 24005

The number of occurrence is:

Number = 15

The number of simulation is 20

So, the probability of seeing at least one robin is:

P = 15/20

Divide

P = 0.75

Hence, the probability of seeing at least one robin is 0.75

Related Questions

Help and I’ll give brainlest answer

Answers

The answer is -88

When you multiply and then divide

Can anyone please help me with these questions 2. a-b 3. a-b 4. a-b and number 5?

Answers

9514 1404 393

Answer:

2a. 0.7, 0.3, -0.1, -0.5, -0.9

2b. 1, 3, 9, 27, 81

3a. geometric; r = 1/5

3b. arithmetic; d = -9

4. 234

5. 1/32

Step-by-step explanation:

2a. Start with the first term and add the common difference to get the next term.

0.7

0.7 -0.4 = 0.3

0.3 -0.4 = -0.1

-0.1 -0.4 = -0.5

-0.5 -0.4 = -0.9

The first 5 terms are 0.7, 0.3, -0.1, -0.5, -0.9.

2b. Start with the first term and multiply by the common ratio to get the next term.

The first 5 terms are 1, 3, 9, 27, 81.

3a. Obviously, the difference between 40 and 8 is not the same as the difference between 8 and 1.6. So, we look to see if the ratios are the same. They are:

8/40 = 1.6/8 = 1/5

This is a geometric sequence with a common ratio of 1/5.

3b. If the sign changes, but does not alternate, it cannot be a geometric sequence. The common difference is ...

-5 -4 = -14 -(-5) = -9

This is an arithmetic sequence with a common difference of -9.

4. Use n=50 and evaluate.

[tex]a_{50}=-11+5(50-1)=\boxed{234}[/tex]

5. Use n=7 and evaluate.

[tex]g_7=2\cdot\left(\dfrac{1}{2}\right)^{7-1}=\dfrac{2}{2^6}=\dfrac{1}{2^5}=\boxed{\dfrac{1}{32}}[/tex]

Write an equation of the direct variation (the line has a y-intercept of (0,0)) that includes the point (3,18).
Desmos Graphing Calculator
Algebra I STAAR Formula Chart
Calculator
Y=12
y = -6x
y 63

Answers

Answer:

Step-by-step explanation:

The triangles on the grid below represent a translation.

On a coordinate plane, triangle A B C is shifted 5 units to the right and 3 units up to form triangle A prime B prime C prime.

To form the image, the pre-image moved
five units right and three units up.
two units right and three units up.
five units left and three units down.
two units left and three units down

Answers

Answer:

Step-by-step explanation:

did it on edge

Answer:

A. five units right and three units up.

Step-by-step explanation:

full answer = To form the image, the image moved

five units right and three units up.

What's 4/5 as a percentage?

Answers

Answer:

80%

Step-by-step explanation:

% is out of 100 so make the denominator of 4/5 to be 100:

4/5 times 20/20 = 80/100 = 80%

Answer:

80%

Step-by-step explanation:

4 divided by 5 equal .8

.8 x 100 equals 80

It's multiplied by 100 because usually percentages are out of 100.

You can move the decimal in .8 to 2 space to the right

EASY i just don’t know how to do it pls help

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Answer:

Step-by-step explanation:

I’ll mark you brainlist if you get the right answer please help!

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Answer:

it would probably be 56

Step-by-step explanation:

Write 35/3 as a mixed number.

Answers

Answer:

Answer is 11⅔

Step-by-step explanation:

if want convert improper fraction into mixed number you have divide numerator by denominator

35÷3=11 remainder 2

You buy five books that are equal in
price and a DVD for $8. Your total
comes to $26.50. Write an equation
that would help you determine the cost
of one book.
( Hint it’s not 3.70!)
Please help!

Answers

If it’s not $3.70, maybe it’s looking for the equation instead like b = (26.50 - 8)/5?

pls help how do u do this???

Answers

Answer:

well well well

Step-by-step explanation:

free points

If the perimeter of the triangle is 60, what is the value of y?

Answers

Answer:

y = 5

Step-by-step explanation:

Given:

In the right triangle the hypotenuse is 5y, one leg is 4y, the other leg is missing

Missing side of the triangle is:

√(5y)² - (4y)² = √(3y)² =3y

Perimeter is 60:

3y + 4y + 5y = 6012y = 60y = 60/12y = 5

a sphere has a radius r=12 inches. What is it’s approximate volume

Answers

Answer: 7238.28

Step-by-step explanation:

Which number line shows the points −125 and –2.8?

Answers

You didn’t send a picture so we can’t tell

Daisy went deep sea diving. She makes the first stop in her descent at 25 meters below the surface of the water. From that point she dives down further, stopping every 5 meters. If she makes 3 additional stops, which number represents her position, relative to the surface of the water?

Answers

Answer:

-45 M

Step-by-step explanation:

The surface of the water is at 0 m. Heights above the surface are positive and depths below the surface are negative.

IF THIS NOT HELP TELL ME AND IL TRY AGAIN!!!

Solve using the quadratic formula x^2-12x+5=0

Answers

Answer:

x=6+[tex]\sqrt{x}[/tex]31

A grandparent deposits $3,000 each year into an annuity that pays 8% interest. Find
the future value at the end of 10 years.

Answers

4590 because I honk the teacher o

Use numerals instead of words. 5 less than a number is equivalent to 1 more than three times the number. The number is __ ?

Answers

Answer:

byeeeeeeeeeeeeeeeeeeeeee

Answer:

t uzi TV CRT currently

Fitzpatrick

convert the word three and five tenths into a fraction

Answers

Your answer would be 3 5/10. (3 and 5/10).

UUUUUUUUUUUUUUUUUUUUUU

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-3>-4 because the number line shows it going to the right side which means the number is bigger then -4 so the only bigger answer is -3 and is correct

Answer:

B. -3 > -4

Step-by-step explanation:

have a nice day!!

your meal at the school cafeteria costs $3.45. Your friends meal costs $3.90. you pay for both meals with a $10bill. How much change do you receive? show your work

Answers

Answer:

You pay for both 10-(3.45+3.90)= 2.65

Answer:

well for me

Step-by-step explanation:

3.45+3.90=7.35

10-7.35

2.65

Need a quick answer please

Answers

Answer:

X=22

Step-by-step explanation:

All the angles in every triangle must add up to 180 so we can subtract 23 and 135 from 180 to get 22.

Answer:

x=22

z=135

y=23

Step-by-step explanation:

First, start with x in the picture. All angles in a triangle add up to 180 degrees. So, add 135+23 and then subtract that from 180.

135+23=158

180-158 = 22 degrees

Angle z is congruent to the larger angle on the other triangle. So, that means z=135.

Angle y is equal to the angle across from it. Y=23

Can someone PLEASE HELLPP MEE

Answers

for x=-4, y=17. for x=-2, y=11. for x=0, y=5. for x=2, y=-1.

g(c)=19−c^2

What is g(4)?

Enter your answer in the box.

Answers

Answer:

g(4)=3

Step-by-step explanation:

Answer:

g = 19

Step-by-step explanation:

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answers

Answer:

Step-by-step explanation:

can yall help me or not?

Answers

Answer

desktop for 1st because it sold less computers and made more money.

for 2nd laptops 1.53 and computer 4.34

Step-by-step explanation:

Write the following expression in word form: 4,568.050

Answers

Answer:

four thousand five hundred and sixty eight and fifty hundredths

Step-by-step explanation:

Answer:

four thousand five hundred sixty -eight, and fifty Hundredths

Step-by-step explanation:

What does the word variable mean in mathematics in your own words?

Answers

A variable is a letter in place of a number which you will later have to substitute

Find the missing measurements.Use 3.14 for Pi. Round all the answers to the nearest hundreth

Answers

Answer:

R=5.0095

D=25.0955

Step-by-step explanation:

C=r^2(3.14)

C=d(3.14)

78.8/3.14=d

Square root diameter to get radius.

please help ASAP!!!!!!

Answers

X=57
Explanation:
63+60=123
180-123=57
When 63 and 60 are added together, you will be able to find x. Subtracting 180 from the sum of 63 and 60 will find x.

Solve the following quadratic by completing the square. (Hint: It won't factor) x2-10x+5=0

Answers

[tex]5+2\sqrt{5} , 5-2\sqrt{5}[/tex] Answer: 5±2[tex]\sqrt{5}[/tex]

Step-by-step explanation:

x2 -10x=5=0

x2-10x+25=-5+25

(x-5)(x-5)=20

[tex](x-5)^{2} =\sqrt{20}[/tex]

[tex]\sqrt{x-5}=\sqrt{20}[/tex]

x-5=±[tex]\sqrt{20[/tex]

x=5±[tex]\sqrt{5*4[/tex]

x=5±2[tex]\sqrt{5}[/tex]

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