A piggy bank contains 3 pennies, 4 nickels, 4 dimes and 9 quarters. Two coins
are selected at random. There is replacement. What is the probability of 1 penny
and 1 nickel?

Answer:

multiply the height and width of each side to get the area

Answer:

The standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90 is of 0.0405

Step-by-step explanation:

Central Limit Theorem:

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

18 percent are longer than 6.5 feet.

This means that [tex]p = 0.18[/tex]

A random sample of 90 sea turtles

This means that [tex]n = 90[/tex]

What is the standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90

[tex]s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.18*0.82}{90}} = 0.0405[/tex]

The standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90 is of 0.0405

In this exercise we have to use the knowledge of proportionality to calculate the samples, so we have to:

The standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90 is of 0.00164

Using the knowledge about central limit theorem, we will have what the proportion will be;

For a balance between parts of whole p fashionable a sample of extent or bulk of some dimension n, the sampling allocation of the sample relative amount will exist nearly usual with mean and predictable difference, so we have that:

[tex]S=\sqrt{\frac{p(1-p)}{n} }\\p=0.18\\n=90\\S=\sqrt{\frac{0.18(1-0.18)}{90} }=0.00164[/tex]

See more about proportion at brainly.com/question/2548537

Answer:

jesse or sam i think its sam by a little bit.

Step-by-step explanation:

Answer:

Sam

Step-by-step explanation:

Find all of their speeds to find how far they will go in 1 minute, by dividing the number of kilometers by the number of minutes:

Sam

4.2/6

= 0.7 km/min

Amanda

3.2/8

= 0.4 km/min

Jesse

3/5

= 0.6 km/min

Since 0.7 is the greatest number, that means Sam is the rider that will go the farthest in one minute.

Answer:

D

Step-by-step explanation:

A, B, and C are not linear functions

D would be y=x/2

If you graphed y=x/2, you would get the points (4, 2), (7, 3.5), (8, 4), and (10, 5)

It's more obvious if you notice that y is half of x.

Answer:

hdhdhdhrheheheheheehhdhdududueueehheb

Answer:

a) 207,360 ways

b)8,709,120  ways

Step-by-step explanation:

Total number of subjects= 3

Number of mathematics books = 4

Number of physics books = 6

Number of chemistry books = 2

Part a:

Number of possible arrangement s= 3! 4! 6! 2!= 6*24*720*2= 207360 ways

In this we have included 3! because the books have to be placed in such a manner that the books in each particular subject must all stand together.

Part b:

Similarly the mathematics books must stand together so they are treated as

The total number of books will be

Physics books + Chemistry books+ Mathematics books= 6+2+1(treated as single) = 9

But there are 4 different mathematics books so these can be arranged in 4 ways.

Total number of ways in which these books can be arranged = 9! 4!= 8709120  ways.

Answer:

A

Step-by-step explanation:

the answer is

x+15=28

x=28-15

x= 13

Answer:

A

Step-by-step explanation:

x+15=28

move 15 to the other side

and change the + to -

x=28-15

x=13

Answer:

Im not entirely sure this is right but

0 = tan^-1(20 ÷ 25)

0 ≈ 38.65°

hope i helped lol

Answer:

-1.6f-46.65

Step-by-step explanation:

Answer:

78

Step-by-step explanation:

Answer:

28.8 and 180

Step-by-step explanation:

you just times B by 2/5 to get C and divide it by 2/5 to get A

C = (72)(2/5) = 28.8 km³

A = (72)/(2/5) = 180 km³

We know the answers make sense because A shrinks to get B and B shrinks to get C, and our answers match that.

Answer:

Jan has 17 credits and Terry has 34 credits.

Step-by-step explanation:

Set up an equation:

Assume Jan’s credits is x

Terry’s credits is 2x

They add up to 51 hours.

Equation: 2x+x=51

x= 17

Jan: 17 credits

Terry: 34 credits.

Answer:

65

Step-by-step explanation:

just to sum all the given measurements:

19+31+15=65.

Answer:

205 sec

Step-by-step explanation:

x = sister

2x = Diana

2x = 410

x = 205

205 sec

hope this makes sense

Answer:

3x + 2y = -4

Step-by-step explanation:

x intercept of the line occurs at y = 0

Given the equation 3x+2y = 6

3x+2(0) = 6

3x  = 6

x = 2

The x intercept is at (2, 0)

Adding -2 to each axis will give (2-2, 0-2) = (0, -2)

y intercept of the line occurs at x = 0

Given the equation 3x+2y = 6

3(0)+2y = 6

2y  = 6

y =3

The x intercept is at (0, 3)

Adding -2 to each axis will give (0-2, 3-2) = (-2, 1)

The new coordinates are (0, -2 and (-2, 1)

Using the point slope form of the equation y - y0 = m(x-x0)

slope m = y2-y1/x2-x1

m = 1-(-2)/-2-0

m = 1+2/-2

m = -3/2

Using m = -3/2 and (0, -2)

y - (-2) = -3/2(x-0)

y+2 = -3/2 x

2(y+2) = -3x

2y+4 = -3x

-3x-2y = 4

3x + 2y = -4

Hence the required equation is 3x + 2y = -4

Answer:

x= 13.25

Step-by-step explanation:

If you simplify that it becomes 8x-6= 100

Then, if you rearrange it, its 8x= 100+6 or 8x=106

So that means x= 13.25

Answer:

r = 97.6

Step-by-step explanation:

3 - r/8 = -9.2

24 - r = - 73.6

- r = - 73.6 - 24

- r = - 97.6

r = 97.6

Answer:

B. 7ab²c

Step-by-step explanation:

The GCF of 21a²b^4c and 49ab²c³ is

7ab²c

Answer:

The correct answer is b.

Answer: 1. 3 • (x + 5) • (x - 5)

2. 2a*(2b+9)

Step-by-step explanation:

Answer:

1) 3(x+)(x-5)

2) 2a(2b+9)

Step-by-step explanation:

Answer:

19

Step-by-step explanation:

1st you will use a^2+b^2=c^2

next you plug them  in so it would be a^2+16^2=25^2

next you would solve it to a^2+256=625

then you would get 369  and square root it  

and your answer will be  19.2.

Answer:

total cost= RS.4050

Total SP= 75*45+25*47.5

TOtal SP= 4562.5

PRofit= 512.5

Profit %= 512.5/4050*100

Profit%=12.7%

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Not 100 percent sure but if you add the 50 and 62 degrees then you get 112

Answer:

112

Step-by-step explanation:

you need to add 50 and 62

Answer:

at constant C = -56 satisfies the given condition of y(x)

Step-by-step explanation:

differentiate y(x) w.r.t.x

[tex]y' (x ) = \frac{d}{dx} (\frac{1}{4} x^5 +Cx^{-3} )[/tex]

        = [tex]\frac{1}{4}\frac{d}{dx} (x^5) + C\frac{d}{dx} (x^{-3} )[/tex]

        = [tex]\frac{5}{4} x^4 - 3Cx^{-4}[/tex]

attached is the remaining part of the detailed solution and the sketch of the several typical solutions

Answer:

5n units

Step-by-step explanation:

C=2πr =2·π·2.5

Answer: B

Step-by-step explanation: If you multipley both 3 and 5 by the same number 4 you get the ratio 12:20

Answer:

12:20

Step-by-step explanation:

3:5

12:20

Answer:

ss

Step-by-step explanation:

sss

Answer:

1/2

Step-by-step explanation:

No matter how many times you get tails or heads it will always be 50/50

Answer: prob 8

Step-by-step explanation: