1. A bag contains 4 gold coins and 5 silver coins. Two coins are taken out at random from the bag, one at a time, without replacement. Find the probability that
a. Both coins are gold.
b. The first coin is silver and the second coin is gold.

Answers

Answer 1

I think it's b. the first coin is silver and the second coin is gold.


Related Questions

What's the variable of 23x4=c

Answers

Answer:

c=23x4

Step-by-step explanation:

Step 1: Flip the equation.

c=23x4

is 1/3 bigger than 33.3%

Answers

33.33 percentage

Step-by-step explanation:

Just multiply a fraction by 100%

to convert it to percentage form.

1/3= 100%=33.33%

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No it is the same value.

1/3 when converted into a percentage is equivalent to 33.3% and since we are comparing 1/3 to 33.3% then they have the same value

What is the value for each box to make the expressions true?

1: 7(3+5) = ? + ?

2: 15 - 10 = ? (3-2)

Please hurry I have to submit this by 3:00

Answers

Answer: 1.  7(3+5)= 21+35

2. 15 - 10 = 5 (3-2)

Step-by-step explanation:

1: 7(3+5) = ? + ?

Opening the bracket and multiplying each number by 7

7 x 3 + 7 x 5 = 21 + 35 =56

7(3+5)= 21+35

2.15 - 10 = ? (3-2)

15- 10 = 5  , On the other hand,

3-2 = 1

to make the left hand equivalent to the right hand side , we multiply the difference gotten from 3-2 by 5 so we have

15 - 10 = 5 (3-2)

5=5(1)

5=5

A biologist studied the frequency of croaks for frogs from two different regions. From a random sample of 32 frogs located in the northern region, the mean number of croaks per hour was 21.3, and from a random sample of 38 frogs located in the southern region, the mean number of croaks per hour was 28.9. To estimate the difference in the mean number of croaks (southern minus northern), a 95 percent confidence interval was constructed from the samples. The interval was reported as (7.1, 8.1). Which of the following claims is supported by the interval?
A. All southern frogs croak more times per hour than do all northern frogs.
B. The northern frogs are likely to have a greater mean number of croaks per hour than the southern frogs.
C. The southern frogs are likely to have a greater mean number of croaks per hour than the northern frogs.
D. All frogs in the study have about the same number of croaks per hour.
E. The northern and southern frogs have the same mean number of croaks per hour.

Answers

Answer:

C

Step-by-step explanation:

Since at the 95% confidence, the difference between the number of croaks per hour between southern and northern region frog is lying in the rage 7.1 to 8.1, this shows that the southern region's frogs' croak frequency is highly likely to be greater than that of northern region's frogs' croaks' frequency.

The claim supported by the interval is

Option C. The southern frogs are likely to have a greater mean number of croaks per hour than the northern frogs.

What does the interval tell obtained in the hypothesis testing?

The interval we obtain at certain confidence tells that the value of the test statistics will lie in that interval with that confidence.

How to identify what is the obtained interval indicating?

Since the test statistics was measuring the croak frequency difference

with southern - northern, and since at 95% confidence,  the difference will lie in interval (7.1, 8.1), which is positive, thus the frequency of crocks for southern frogs is greater than the frequency of crocks for northern frogs.

Thus,

The claim supported by the interval is

Option C. The southern frogs are likely to have a greater mean number of croaks per hour than the northern frogs.

Learn more about confidence interval here:

https://brainly.com/question/14562078

Please give me the answer. Thanks

Answers

the perimeter is 36 inches

Find the slope of the line through each pair of points.
1. (4,-16), (7,18)
2. (2,1), (-9, -3)
3. (-11,2), (15,5)
4. (5,6), (10, -12)

Answers

Answer:

1. 11 1/3

2. 4/11

3. 3/26

4. -18/5

Step-by-step explanation:

Estimate the time Juanita will arrive at her aunt's home 320 miles away if she leaves at 9:00 a.m., drives about 60 miles per hour, and stops

for a 40 minute break halfway.

A 12:00 p.m.

B. 1:00 p.m.

c. 2:00 p.m.

D. 3:00 p.m.

E. 4:00 p.m.

Answers

Answer:

D. 3:00 p.m.

Step-by-step explanation:

d = Distance = 320 miles

s = Speed = [tex]60\ \text{mph}=\dfrac{60}{3600}=\dfrac{1}{60}\ \text{miles/s}[/tex]

Time taken is given by

[tex]t=\dfrac{d}{s}\\\Rightarrow t=\dfrac{320}{\dfrac{1}{60}}\\\Rightarrow t=19200\ \text{s}[/tex]

40 minutes break is [tex]40\times 60=2400\ \text{s}[/tex]

Total time taken is [tex]19200+2400=21600\ \text{s}=\dfrac{21600}{60\times 60}=6\ \text{hours}[/tex].

So, the entire trip took 6 hours. 6 hours after 9 a.m. is 3 p.m.

Find the perimeter of the following shape:

Answers

Answer:

37.5in

Step-by-step explanation:

you add all the outer lengths up. the altitude doesn't count.

12+11.5+14= 27.5. Hope this helps.

Quilt squares are cut on the diagonal to form triangular quilt pieces. The hypotenuse of the resulting triangles is 16 inches long. What is the side length of each piece?

Answers

To do this problem you would need to have at least one side length AND the hypotenuse to figure out the other side length.

If y=-4+11 and 3x+y=9 what is the value of y?

Answers

Answer:

y = 7

x = 2/3

Step-by-step explanation:

hope it help

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Answer:

2/3

Step-by-step explanation:

We know the value of y, so substitute y into the equation:

3x + (-4 + 11) = 9 --> remove parentheses

3x - 4 + 11 = 9

3x + 7 = 9 --> subtract 7 from 9

3x = 2 --> divide

x = 2/3

Madison makes 4 types of hair ribbons. She makes 3 of each type of ribbon. How
many hair ribbons does Madison make?
A 12
B. 10
C. 9
D. 7

Answers

Answer:

D. 7

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Which of the following is the graph of the function y = (x – 3)2 – 2?

Answers

Answer: I’m pretty sure it’s graph A

Step-by-step explanation:

Answer:

D, Last graph

Step-by-step explanation:

After test review, it revealed the answer, but the answer's D. Sorry for the poor explanation!

Which questions are True or False?

1.) Supplementary angles always add up to 90°.

2.) Complementary angles always add up to 180°.

3.) Vertical angles always have the same measure.

4.) ∠x is complementary to the 34°angle.

5.) ∠z is vertical to the 112°angle.

6.) ∠y is a linear pair with the 146°angle.

Answers

Answer:

1) false

2) false

3) true

4)false

5) true

6) true

There are 40 mg of bacteria in the sample. The next day there are 50 mg of bacteria, and the following day there are 62.5 mg of bacteria. The bacteria sample continues to grow exponentially. What function can be used to model this situation?

Answers

A A(t)=40(1.25)^t
B A(t)=40(.75)^t
C A(t)=50(.25)^2
D A(t)=50(1.25)^t

Answers

Don’t take my
Word for it but I think
It is C

Please help photo attached

Answers

Answer:

12/20

Step-by-step explanation:

Cosine is a trigonometric identity. It is a ratio of the adjacent side and hypotenuse of a right triangle.

The adjacent side to angle Θ is 12. The hypotenuse of this triangle is 20.

cosΘ in this case would be 12/20.

ASAP need help with system of equations... I'm too small brain to do it.

Answers

Answer:

(x=0, y=11)

(x=2, y=9)

Step-by-step explanation:

first equation substitution for x first.

y=11-x

plug into 2nd equation

(x+2)^2+(11-x-7)^2=20

this should lead you into a quadratics equation.

you get x=0, x=2.

do the same for y value this time, subbing in the x value

(11-y+2)^2+(y-7)^2=20

this also leads into a quad equation

solve and you get y=11, and y=9

Which table represents the statement "Brian rides a bicycle at a rate of 12 meters per second"?
seconds (S)
1
2
3
meters (m)
12
18
24
seconds (S)
1
2
3
meters (m)
12
24
48
seconds (S)
2
3
meters (m)
12
13
14
seconds (S)
1
2.
meters (m)
12
24
Mark this and return
Save and

Answers

Answer: D

Step-by-step explanation: Because

1 x 12 = 12

2 x 12 = 24

3 x 12 = 36

Answer:

D

Step-by-step explanation:

Got 100 on test on Edg

How many different committees can be formed from 7 teachers and 30 students if the committee consists of three teachers and four students

Answers

Answer:

959175

Step-by-step explanation:

a) Teachers' committee:

[tex]C^3_7=\frac{7!}{3!4!}=35;[/tex]

b) Students' committee:

[tex]C^4_{30}=\frac{30!}{4!(30-4)!}=\frac{27*28*29*30}{2*3*4}=35*27*29=27405;[/tex]

c) Teachers & Students:

[tex]C^3_7*C^4_{30}=35*27405=959175.[/tex]

What is -1/2+-1/5+-5x+3/10+3/2=

Answers

Answer:

-5x + 11/10

Step-by-step explanation:

A series of maths books consists of four volumes. The first has x pages and the second has 54 more. The third and fourth volumes have 32 more pages than the second volume. The number of pages of all volumes is 866. Calculate the number of pages in each volume.

Answers

Answer:

1st volume = 160

2nd volume = 160 + 54 = 214

3rd volume = 160 + 54 + 32 = 246

4th volume = x + 54 + 32 = 246

Step-by-step explanation:

Given that:

Number of volumes = 4

1st volume = x pages

2nd volume = 54 more = x + 54

3rd volume = 32 more = x + 54 + 32

4th volume = 32 more = x + 54 + 32

Total number of pages = 866

Hence,

1st + 2nd + 3rd + 4th = 866

x + x + 54 + x + 54 + 32 + x + 54 + 32 = 866

4x + 226 = 866

4x = 640

x = 160

1st volume = 160

2nd volume = 160 + 54 = 214

3rd volume = 160 + 54 + 32 = 246

4th volume = x + 54 + 32 = 246

someone plssss help (15 points) ty

Answers

Answer:

x = 67

Step-by-step explanation:

2x - 17 + 63 = 180 {Linear pair}

     2x + 46  = 180    

             2x = 180 - 46

             2x = 134

               x = 134/2

              x = 67

Solution :

[tex]\color{plum}\bold{x \tt \: = 67}[/tex]

Steps to derive the correct solution :

∠63° and ∠(2x-17)° are a linear pair, so their sum will be equal to 180°.

Which means :

[tex] = 63 + 2x - 17 = 180[/tex]

[tex] = 63 + 2x = 180 + 17[/tex]

[tex] = 63 + 2x = 197[/tex]

[tex] = 2x = 197 - 63[/tex]

[tex] = 2x = 134[/tex]

[tex] = x = 67[/tex]

Let us place 67 in the place of x and see if the substitution is equivalent to 180° :

[tex] = 63 + 2 \times 67 - 17 = 180[/tex]

[tex] = 63 + 134 - 17 = 180[/tex]

[tex] = 63 + 117 = 180[/tex]

[tex] = 180 = 180[/tex]

Thus, the value of x we found out is correct.

Therefore, x = 67

The model shows the expression 20+16. Which expression is equivalent to this sum?

Answers

Answer:

4(5+4)

Step-by-step explanation:

20+16 = 36

4(5+4)=

4(5)+4(4)=

20+16= 36

4(5+4)=

4(9)= 36

use a common denominator
What does 1/9 equal?

Answers

Answer:

2/18

Step-by-step explanation:

because i multiplied 1/9 by 2

You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 12 dollars/hour, and each shift lasts 75 minutes. Your laundry requires 12 quarters/load.Part AHow many shifts must you work if you wish to wash 10 loads of laundry

Answers

Answer:

2 shifts

Step-by-step explanation:

Amount earned washes dishes = 12 dollars / hour

Shift duration = 75 minutes

Cost of laundry = 12 quarters per load

Cost of 10 loads of laundry = (10 * 12 quarters) = 120 quarters

1 quarter = 25 cents

120 quarters = (25 * 120) = 3000 cents

100 cents = $1

3000 cents = 3000/ 100 = $30

Hence, to make $30 from washing dishes :

$12 = 1 hour

$30 = x

x = 30 / 12

x = 2.5 hours

1 shift lasts 75 minutes

2.5 hours = (2.5 * 60) = 150 minutes

150 / 75 = 2 shifts

If r * s = s to the power of r, then 3 * 2 =​

Answers

Answer:

[tex]3*2=8[/tex]

Step-by-step explanation:

We know that [tex]r*s=s^{r}[/tex], and we want to find [tex]3*2[/tex] using this formula. To do this, notice that [tex]r=3[/tex] and [tex]s=2[/tex], so all we have to do is substitute the given values into the formula. Therefore:

[tex]r*s=s^{r}[/tex]

[tex]3*2=2^{3}[/tex] (Substitute [tex]r=3[/tex] and [tex]s=2[/tex] into [tex]r*s=s^{r}[/tex])

        [tex]=8[/tex] (Simplify)

Hope this helps!

the temperature at 6:00 am was -12°f. temperature increased by 1/2 °F each hour for 6 hours.what was the temperature in degrees Fahrenheit at noon?​

Answers

Answer:

600

Step-by-step explanation:

Answer:-9

Step-by-step explanation:

Polygon ABCD has the following vertices:

A(−4, 2), B(3, 2), C(3, −5), and D(−4, −2)

Calculate the area of the polygon.

28 units squared
38.5 units squared
40.5 units squared
49 units squared
get it right because i can check and i'll not give you brainlyest
:)

Answers

To be able to solve clearly this problem, the best thing to do is to plot the graph (see attached pic). From the graph we can see that the points form a trapezoid.

The base is formed by the segment connecting point A and point B.

While the two heights: shorter one by the segment connecting points A and D, and the longer one by the segment connecting points B and C.

The formula for area of trapezoid is given as:

A = b (h1 + h2) / 2

Where,

b = base of the trapezoid  = 3 – (-4) = 7

h1 = shorter height = 2 – (-2) = 4

h2 = longer height = 2 – (-5) = 7

Therefore the area is:

A = 7 (4 + 7) / 2

A = 77 / 2

A = 38.5

HELP!!! Need to finish this today! Overdue! Will mark you branliest...your help will be greatly appreciated :)

Answers

Answer:

C. SAS

Step-by-step explanation:

If you look at both of the triangles carefully, you will see that both side AB and side DC have the same amount of lines. Since they have the same sides, the angle that they share would equal each other as well. The last side is obviously equal to each other because they are the same.

SSS, because all of the sides are the same ; AC = BD , AB = CD , and they both share side BC

u have got this !! dont stress too much :(

ms. simonaue and Mrs. law are racing in the big race. Their distance in meters and their time is measured in seconds. Ms. Simonaue ride is described in the equation.

[tex]y = \frac{3}{2} x + 4[/tex]
what is the description to match the equation. what is her rate? did she get a head start?​

Answers

Answer:

She started 4 meters ahead and moves forward 1.5 meters every second.

The rate is 1 and 1/2 meters per second and she did get a head start of 4 meters

Find the circumference. Round to the nearest hundredth. Diameter= 16 feet

Answers

Step-by-step explanation:

[tex] = 2\pi \times r = 2\pi \times \frac{16}{2} = 2\pi \times 8 = 50.265 = 50.27[/tex]

Other Questions
On October 26th 1963 then president John F Kennedy delivered his speech at Amherst college in Massachusetts. the speech was delivered during a ceremony in which Kennedy received an honorary degree and also took part in the groundbreaking for the college's new library, named in honor of the poet, Robert frost, who died earlier that year. The following is an excerpt of Kennedy's speech. read the passage carefully. write an essay that analyzes the rhetorical choice Kennedy makes to develop his argument about the critical role artists play in society.Plz help!! Solve the formula a(m+r) -t=s for a. How did the location of the Holy Roman Empire make it vulnerable to invasion by Germanic rulers? Explain the process of photolysis inside the chloroplast*need ASAP * What does a bone's density relate to? Least to greatest 8/9 0.51 3/5 if a ship was on coordinate (6,5) and it moved 5 units, what coordinate is it on now? Triunghiul isoscel ABC are latura [BC] situata intr un plan alfa si se proietcteaza pe plan dupa triunghiul dreptunghic DBC. Stiinda ca m(BDC)=90, iar BD=16 cm si CD=12 cm, aflati a) cosinusul unghiului ABC b) lungimea laturii [BC] a triunghiului ABC Examine the dates in this timeline:1526: The Mughal Empire isestablished in northern India.1601: Mughal leaders support theconstruction of the Sikh holy siteknown as the Golden Temple.1653: Mughal ruler Shah Jahan overseesthe construction of the Taj Mahal palace.1669: Hindus rebel against a newMughal policy of taxing non-Muslims.1757: British troops overthrow theMughal governor of Bengal, India.Which title best describes the events in the timeline?A)The early foundations of the Mughal Empire.B)The spread of British colonial power in India.C)The era of Mughal religious persecution.D)The rise and decline of the Mughal Empire. What test are included in the Physical Fitness Test?PACER/Mile Run, Push Ups, Curl Ups, Trunk Lift, Back Saver Sit-and-ReachPACER/Mile Run, Push UpsO Push Ups, Curl Ups, Trunk Lift, Back Saver Sit-and-ReachPACER/Mile Run, Long Jump, Push Up, The cells in a certain part of a plant form tubes. What is the most likelyfunction of these specialized cells?A. Reproduction of plant cellsB. LocomotionC. Transportation of water and nutrientsD. Photosynthesis Given O that is the center of the circle below, compare the quantity in column A with the quantity in column B.Choose the best answerA.The quantity in column A is greaterB.The quantity in column B is greaterC. The two quantities are equalD. The relationship cannot be determined from the information given. this artwork uses which type of balance?A: SymmetricalB: ApproximateC:RadialD: Asymmetrical How are cells the basic unit of structure and function in the human body? un and una are called indefinite articles and are the equivalent of ____ and ____ in english why is muscular endurance important ? The political candidates keep talking to the citizens about the possibility of a recession. What would MOST likely happen if a country experiences a recession?A. Feeling confident in the economy, people will begin to spend money more freely.B. Jobs will be more plentiful, and companies will be doing a lot of hiring.C. Families will start to purchase larger and more expensive homes.D. Businesses will suffer from decreased sales and profits, eventually leading to closure. PLZ SOLVE PIC ATTACHED BELOW A claim is an assertion about a topic true or false? Please help!!Does the amount energy from food eaten by each organism equal the amount of energy used but each organism?