You reach into a bag of coins and withdrew two coins without replacement. What is the probability you withdrew a nickel and then a dime if the bag held ten pennies, six nickels, and five dimes?









1.30/44
2.5/14
3.1/14

Answers

Answer 1

Answer:

Option 3. 1/14

Step-by-step explanation:

The bag held some coins that are

pennies = 10

nickels = 6

dimes = 5

total coins = 10 + 6 + 5 = 21 coins

You drew 2 coins without replacement,

so the probability that first draw will be nickel = [tex]P_{1}[/tex] = 6/21 = 2/7

Second draw will be a dime  = [tex]P_{2}[/tex] = 5/20 = 1/4

P = [tex]\frac{2}{7}[/tex] × [tex]\frac{1}{4}[/tex] = 2/28 = 1/14

Option 3. 1/14 would be the answer.

Answer 2

Final answer:

The probability of withdrawing a nickel and then a dime from the bag without replacement is 1/14, calculated by multiplying the independent probabilities of drawing each coin in sequence (6/21 for the nickel and 5/20 for the dime).

Explanation:

The student has asked for the probability of withdrawing first a nickel and then a dime from a bag containing ten pennies, six nickels, and five dimes, without replacement. To solve this, we calculate the probability of each event independently and then multiply these probabilities, since the events are dependent.

First, the probability of drawing a nickel: There are six nickels and a total of 21 coins, so the probability is 6/21. After drawing a nickel, there are five dimes left out of 20 coins total, thus the second probability is 5/20. Multiplying these together gives us:

(6/21) * (5/20) = 30/420 = 1/14

So, the probability of drawing a nickel and then a dime without replacement from this bag of coins is 1/14.


Related Questions

The sum of a number and its square is 210. find the​ number(s).

Answers

I think it's x=14 hope this helped

The required number, whose sum with its square is 210, is -15 and 14.

Given that,
The sum of a number and its square is 210. To determine the​ number(s).

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,

Here,
Let the number be x,
according to the question,
x + x² = 210
x² + x -210 = 0
x² + 15x - 14x  - 210 = 0
x(x + 15) -14 (x + 15) = 0
(x + 15)(x - 14) = 0
x = -15 and 14

Thus, the required number, whose sum with its square is 210, is -15 and 14.

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how do you subract polynominals plz explain

Answers

when subtracting polynomials you subtract the like terms

Write an equation of a vertical line passing through the point (5,-4). Show all work.

Answers

x=5
A verticle line is written with x= something so the y can be anything

Four less than half a number is 17 .How would I solve this?

Answers

First, let's define the number we are looking for as n.

So "half a number" is (1/2)×n

Therefore, "four less than" this would be: ((12)×n)−4

And if this is or, in other words, = to #17 we can write the equation:

((12)×n)−4=17

Solving for n while keeping the equation balanced gives:

((12)×n)−4+4=17+4

(12)×n=21

(21)×(12)×n=21×(21)

((21)×(12))×n=421

1×n=42

n=42


The answer to this problem is 42

Match the following:
Question 1 options:

√−1

-1

-i

1


Answer options
i2

i

i3

i4

Answers

Assuming i2 is i^2

√-1 = i
i^2 = -i
i^3 = -1
i^4 = 1

Alvin is 6 years older than Elga. The sum of their ages is 106 . What is Elga's age?

Answers

Elga's age is 50, and Alvin's age is 56. So, the sum of their ages is 106.
Let the age of Elga be x.

Age of Alvin = x + 6

Sum of ages = 106

x + x + 6 = 106

2x + 6 = 106

2x = 106 - 6

2x = 100

x = [tex] \frac{100}{2} [/tex] 

x = 50

Hence, Elga is 50 years old.

What is the length of line segment KJ?

A. 2√3 units
B. 3√2 units
C. 3√5 units
D. 3√3 units

Answers

∠KMJ = 180° - 90° (adjacent angles on a straight line)
= 90°

Using Pythagora's Theorem,
KJ² = 6² + 3²
KJ² = 45
KJ = √45
= √9√5
= 3√5

The answer is C. The length of line segment KJ is 3√5 units.

Answer:

the answer is the option C

[tex]KJ=3\sqrt{5}\ units[/tex]

Step-by-step explanation:

we know that

The triangle KMJ is a righ triangle

so

Applying the Pythagoras Theorem

[tex]KJ^{2}=KM^{2}+MJ^{2}[/tex]

in this problem we have

[tex]KM=6\ units[/tex]

[tex]MJ=3\ units[/tex]

substitute

[tex]KJ^{2}=6^{2}+3^{2}[/tex]

[tex]KJ^{2}=45[/tex]

[tex]KJ=\sqrt{45}=3\sqrt{5}\ units[/tex]

Please help don’t know how to do it iv tried and can’t figure it out. Please help thank you!

Answers

I believe the answer is C. If any graph doesn't pass the Vertical Line Test(VLT) then it is not a function. I hope this helps love! :)

If one foot equals 12 inches and one mile is 5280 feet, how many miles are in 50000 inches

Answers

Final answer:

To calculate the total miles, first convert 50000 inches to feet, then convert the result to miles. Approximately 0.790 miles are in 50000 inches.

Explanation:

To answer your question, "How many miles are in 50000 inches?" We need to convert inches to miles. We have to use the given conversion rates: 1 foot = 12 inches and 1 mile = 5280 feet.

First, let's convert inches into feet by dividing the total inches by the conversion factor of inches to feet. So, 50,000 inches divided by 12 equals approximately 4166.67 feet. Then, to find the total miles, we must convert feet to miles using the conversion factor of feet to miles. So, 4166.67 feet divided by 5280 (the number of feet in a mile) equals approximately 0.790 miles.

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solve

5x+3y=-27
-9x+2y=19

Answers

45x+27y=-243
-45x+10y= 95

37y= -148

y= -4

5x-12= -27

5x=-15

x=-3

Suppose g is an odd function and let h = f ∘ g. is h always an odd function?

Answers

No we can not say that h will always an odd function. Because we don't know about the function f.

As we know Multiplication of two odd function is even function. And Multiplication of one even and one odd function is an odd function.

So if f is an odd function then we can say h is a multiplication of two odd function and multiplication of f and g will be an even function. So h will be an even function.

Similarly if f is an even function then h is a multiplication of one even and one odd function and multiplication of f and g will be an odd function.


Final answer:

The composition h = f о g is only guaranteed to be an odd function if both g and f are odd functions. If f is an even function or neither odd nor even, h will not necessarily be an odd function. The property of the composition depends on the nature of both functions involved.

Explanation:

Whether the composition of functions h = f о g is always an odd function when g is an odd function depends on the nature of f. If g(x) is an odd function, it follows that g(-x) = -g(x). However, for h to also be odd, f must satisfy the condition h(-x) = -h(x). This can only be the case if f is also an odd function.

If f were an even function, then f(g(-x)) = f(-g(x)) would equal f(g(x)) due to the even property of f. In this scenario, h would not be an odd function since h(-x) = f(g(-x)) = f(g(x)) = h(x), which violates the definition of an odd function.

When an odd function and an even function are multiplied, the result is an odd function, as exemplified by g(x) = x³ - 3x and h(x) = x². But when composing functions, the outer function's properties dominate the result. Therefore, the composition h = f о g can only be assured to be odd if f itself is odd.

Ron is five years older than twice his cousin Pats age. The sum of their ages is less than 35.
What is the greatest age that Pat can be.
A) 7
B)8
C)9
D)10

Answers

Answer:

C. 9

Step-by-step explanation:

Ron is five years older than twice his cousin's age. Lets assume that Pat's age is 'x' years.

So Ron's age is [tex]2\times x+5=2x+5[/tex]

The question says:

[tex]x+2x+5<35[/tex]

[tex]3x+5<35[/tex]

[tex]3x<35-5[/tex]

[tex]3x<30[/tex]

[tex]x<10[/tex]

Pat's age [tex](x)[/tex] should be less than 10. Therefore, the greatest age (in integer) that Pat can be is 9 years.

How long will it take to have R30 000 for a trip to Europe if I invest R20 000 now at 15% per year,
compounded quarterly?

Answers

The formula is
A=p (1+r/k)^kt
A future value 30000
p present value 20000
R interest rate 0.15
K compounded quarterly 4
T time?
30000=20000 (1+0.15/4)^4t
Solve for t
Divide both sides by 20000
30000/20000=(1+0.15/4)^4t
Take the log of both sides
Log (30000/20000)=4t×log (1+0.15/4)
Divide both sides by log (1+0.15/4)
4t=Log (30000/20000)÷log (1+0.15/4)
Divide both sides by 4
T=(log(30,000÷20,000)÷log(1+0.15÷4))÷4
T=2.7 years round your answer to get 3 years

Hope it helps!

A truck travels on the highway at a speed of 72 miles per hour. What is the speed of the truck in feet per second

Answers

the answer is .02 per second

1 mile = 5280 feet

1 hour = 3600 seconds

72 * 5280 = 380160 feet per hour

380160/ 3600 = 105.6 feet per second ( round answer if needed)

What is the solution to the equation using the replacement set {2, 3, 4} 6+x/2=8

Answers

4 is the solution

cause
6 +4/2 = 8
  6 + 2 = 8
        8 = 8

what is the result of converting 8 gallons to quarts ? remember , there are 4 quarts in a gallon

Answers

Answer: 32 quarts

Step-by-step explanation:

We know that there area 4 quarts in one gallon.

i.e.[tex]1\text{ gallon}=4\text{ quarts}[/tex]

Now, to convert 8 gallons into quart we need to apply unitary method.

Using unitary method , to convert 8 gallons into quart , multiply 8 to 4 , we get

[tex]8\text{ gallon}=8\times4\text{ quarts}\\\\\Rightarrow\ 8\text{ gallon}=32\text{ quarts}[/tex]

Hence there are 32 quarts in 8 gallons.

There are 32 quarts in 8 gallons of quantity.

The given quantity is 8 gallons.

We know that, 1 gallon = 4 quarts

Here, 8 gallons = 8×4

= 32 quarts

Therefore, there are 32 quarts in 8 gallons of quantity.

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Please, please, PLEASE help!!!

Candice paid $2,000 for her whole life insurance policy this year. A term insurance policy with the same coverage would cost her about $700 a year. Assuming she decides to buy the term policy and invest the difference, earning a rate of 6 percent, how much money could she "make" in a year?

Answers

Candance could make at least 1,620,000 a year

Which is a way to check the answer 120 divided by 4 = 30

Answers

Multiply 4 and 30. If the answer is 120, then you are correct.
120/4=30
120=30 x 4
Move 4 to the back and switch division to multiplication.

The amounts of industrial waste generated in a region during two years were 31,900,000 tons and 53,400,000 tons. What was the total industrial waste generated over these two years in the region, expressed in scientific notation?

Answers

8.53 times 10^7 tons

The sum of three consecutive even integers is 174 what are the integers?

Answers

Hello There!

Call the first number n.
n + n + 2 + n + 4 = 174
Simplify:
3n + 6 = 174
Subtract 6:
174 - 6 = 168
Divide by 3:
168/3 = 56.

The numbers are 56, 58 and 60

Hope This Helps You!
Good Luck :)

The required three consecutive even integers are 56, 58, and 60.

Given that,
The sum of three consecutive even integers is 174 what are integers is to be determined?

What is arithmetic progression?

Arithmetic progression is the series of numbers that have common differences between adjacent values


Here,
Let the three even integers be 2x, 2x+ 2 and 2x + 4
Now, accoding to the question,

2x + 2x + 2 + 2x + 4 = 174
6x + 6 = 174
x = 28

Now,
2x =28 * 2 = 56

2x + 2 = 56 + 2 = 58
2x + 4 = 56 + 4 = 60

Thus, the required three consecutive even integers are 56, 58, and 60.


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Andrea is selling candles as a fundraiser. she spent $50 on supplies for making the candles. she plans to sell the candles for $10 each. her profit can be modeled by c(x)=10x-50. what is the domain and range of the function

Answers

The domain will consist of all non-negative real numbers (x ≥ 0).

And, the range will consist of all real numbers (-∞, +∞).

Given that;

The function is,

c (x) = 10x - 50

Now for the domain and range of the function c(x) = 10x - 50,

Since the domain refers to all the possible input values (x) for the function.

In this case, since c(x) represents the profit from selling candles, x would represent the number of candles sold.

The number of candles sold cannot be negative, as it wouldn't make sense to sell a negative number of candles.

So, the domain will consist of all non-negative real numbers (x ≥ 0).

And, The range refers to all the possible output values (c(x)) of the function.

In this case, c(x) represents the profit. The profit can be any real number because it can be positive, negative, or zero.

Therefore, the range will consist of all real numbers (-∞, +∞).

Thus, Domain: All non-negative real numbers (x ≥ 0).

Range: All real numbers (-∞, +∞).

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-3(-7p-6) -7< p -29 how to do

Answers

Let's solve your inequality step-by-step.

−3(−7p−6)−7<p−29

Step 1: Simplify both sides of the inequality.
21p+11<p−29

Step 2: Subtract p from both sides.
21p+11−p<p−29−p
20p+11<−29

Step 3: Subtract 11 from both sides.
20p+11−11<−29−11
20p<−40

Step 4: Divide both sides by 20.
20p/20 < -40/20

p<−2

Answer:p<−2

I hope this helps you! :)


How do I construct angle XYZ with a measure of 2 times the measure of angle ABC

Answers

I can’t understand why everyone complicates this question. It can be easily solved by similar triangles.


In this png, we have something to make sure.

∠B=∠DAB

B
=

D
A
B
(Yes, dab)

This also means AD=BD
A
D
=
B
D
.

This is our basic construction of D, which is going to help us.

∠ADC=∠DAB+∠B=2∠B=∠CAB

A
D
C
=

D
A
B
+

B
=
2

B
=

C
A
B

∠CAD=∠CAB−∠DAB=∠B

C
A
D
=

C
A
B


D
A
B
=

B

These are based on the fact that ∠A=2×∠B

A
=
2
×

B

Actually these conditions suffice. Because I am just proving that △ACD∼△BCA

A
C
D


B
C
A

Similarity makes us realize the following:

ACBC=ADAB
A
C
B
C
=
A
D
A
B

and

ACBC=CDAC
A
C
B
C
=
C
D
A
C

So

AC×AB=BC×AD
A
C
×
A
B
=
B
C
×
A
D

and

AC2=BC×CD
A
C
2
=
B
C
×
C
D

So

BC2=BC×(BD+CD)=BC×(AD+CD)
B
C
2
=
B
C
×
(
B
D
+
C
D
)
=
B
C
×
(
A
D
+
C
D
)

=AC×AB+AC2
=
A
C
×
A
B
+
A
C
2

Q.E.D.
2.4k Views ·

The inner dimensions of an in-ground swimming pool are: width = 13.0ft, length = 18.0 ft, and depth = 9.0ft. the pool walls and the bottom are uniformly 1.0 ft thick and made of concrete. what is the total concrete surface area of the pool in units of ft2?

Answers

In swimming pool, the area would be only 5 pieces of rectangles since the top would be open. But if each area needs 1ft thick of concrete, then the length and width will be increased 2ft, but height only increased 1 ft. Make it length=20ft, width= 15ft, height= 10ft
Then to find the swimming pool area that need to be put some concrete the formula is:

Swimming pool area= length x width+ 2(length x height) + 2 (width x height)
Swimming pool area= 20ft x 15ft+ 2(20ft x 10ft) + 2( 15ft x 10ft)= 300ft[tex] ft^{2} [/tex] + 600[tex] ft^{2} [/tex] + 300[tex] ft^{2} [/tex]= 1200 [tex] ft^{2} [/tex]


The swimming pool is in the shape of a open top rectangular prism. The concrete boundary of the swimming pool is in the shape of rectangular prism slabs.

The surface area of the interior sides of the swimming pool is given by 2(13 x 9)ft + 2(18 x 9)ft = 234ft + 324ft = 558ft^2

The surface area of the interior bottom of the swimming pool is given by 13 x 18 = 234ft^2.

The surface area of the exterior sides of the swimming pool is given by 2(15 x 10)ft + 2(20 x 10)ft = 300ft + 400ft = 700ft^2

The surface area of the exterior bottom of the swimming pool is given by 15 x 20 = 300ft^2.

The surface area of the top thickness of the swimming pool is given by 2(1 x 14) + 2(1 x 19) = 28 + 38 = 66ft^2

Therefore, total surface area = 558 + 234 + 700 + 300 + 66 = 1,858 ft^2.

Find a general form of an equation of the line through the point a that satisfies the given condition. a(6, −5); parallel to the line 9x − 2y = 7

Answers

9x - 2y = 64 If a line is parallel to another line, then it has the same slope. Which means that the desired equation will have the form 9x - 2y = ? So let's plug in the values for the point (6,-5) and calculate what the constant should be. 9*6 - 2*(-5) = ? 54 + 10 = ? 64 = ? So the desired equation will be 9x - 2y = 64
Final answer:

To find the parallel line's equation through the point (6, -5), we identify the slope of 9x - 2y = 7 as (9/2), and then use the point-slope form with the given point to derive the new line's equation. The final general form of this equation is 9x - 2y - 64 = 0.

Explanation:

To find the general form of an equation of the line that is parallel to the line 9x - 2y = 7 and passes through point a(6, -5), we first need to identify the slope of the given line. The slope-intercept form of the line can be found by rearranging the equation into y = mx + b, where m is the slope. For the given equation 9x - 2y = 7, we solve for y to get the slope:

2y = 9x - 7


y = (9/2)x - 7/2

The slope of the given line is (9/2). Since parallel lines have the same slope, our new line will also have a slope of (9/2). Using the point-slope form of a line's equation, we can insert the slope and the coordinates of point a to determine the equation of our new line:

y - y₁ = m(x - x₁)


y - (-5) = (9/2)(x - 6)


y + 5 = (9/2)x - 27

Finally, we rearrange this equation to its general form, Ax + By + C = 0:

(9/2)x - y - 32 = 0

or


9x - 2y - 64 = 0

This is the general form of the equation of the line that is parallel to 9x - 2y = 7 and passes through point (6, -5).

What is the slope of line represented by 1/8x + 3y =3

Answers

1/8x+3y=3
subtract 1/8x from both sides

3y=-1/8x+3
divide both sides by 3

y=-1/24x+1

ANSWER: the slope should be -1/24
Get the equation into slope-intercept form and you will easily see the slope.

(1/8)x + 3y = 3

Solve for y.

(1/8)x + 3y = 3
3y = -(1/8)x + 3 <-- Subtract (1/8)x from each side
y = (-(1/8)x / 3) + (3 / 3) <-- Divide each side by 3
y = -(1/24)x + 1

Now we have the slope-intercept form:

y = -(1/24)x + 1

So, the slope is -1/24.

What is 60% off of 33.00

Answers

.6 *33 =19.8% the answer is 19.8
Final answer:

To find 60% off of $33.00, you multiply 33 by 60, then divide the product by 100. The result is $19.80, which is the discount amount. So after the discount, the cost is $13.20.

Explanation:

To find out what 60% off of $33.00 is, you need to multiply 33.00 by 60 and then divide that product by 100, as percentages are always out of 100. Here's the process:

Multiply 33.00 by 60 to get 1980.00. Then divide 1980.00 by 100 to convert the result into a dollar amount. You get 19.80.

So, 60% off of $33.00 equals $19.80. Hence, after a 60% discount, you would pay $13.20 (33 - 19.80), as this is the remaining cost after the discount has been applied.

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The selling price s, of an item is s=c+me, where c is the cost of the item and m is the percent markup based on the cost. What is the formula solved for m?

Answers

s=c+me
s-c=me
m=(s+c)/e

Study the Proof Given.

List the reasons for Items 2,3, & 4.

Right the number and then the answer.

Answers

Given that B is the midpoint of line AC and line BC is congruent to line DE.

The following statements and reasons, proves that line AB is congruent to line DE.

     Statement                                                   Reasons

1.  B is the midpoint of line AC                        Given
2.  Line AB is congruent to line BC.                 Midpoint of a line segment
3.  Line BC is congruent to line DE                  Given
4.  Line AB is congruent to line DE                  Transitive property

Suppose you write a sum of numbers as a product of their GCF and another sum. What is the GCF of the number in the other sum? Explain

Answers

example :
20 + 30.....GCF = 10

10(2 + 3)

The GCF of the number now is 1....because u have basically already factored the GCF out.....leaving only 1 as a factor now

here's another one...
3 + 9...GCF = 3
3(1 + 3)
so the GCF now is 1
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