1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Valentin [98]
3 years ago
14

Reiko takes 2 coins at random from the 3 quarters, 5 dimes, and 2 nickels in her pocket. three coins are tossed. what is the pro

bability of 2 heads and 1 tail? what is the probability that she chooses a quarter followed by a dime?
Mathematics
1 answer:
I am Lyosha [343]3 years ago
5 0
The answers are 3/8 and 1/6.

There are 8 possible outcomes in the sample space for flipping 3 coins.  Of those, 3 include two heads and 1 tail.  This makes the probability 3/8.

Choosing a quarter for the first coin is 3/10, since there are 3 quarters out of 10 coins.  After this, choosing a dime is given by 5/9, since there are 5 dimes out of 9 coins left:
3/10(5/9) = 15/90 = 1/6
You might be interested in
Help pls!! I need help!!
AlladinOne [14]

Answer:

what u need help wt?

Step-by-step explanation:

6 0
3 years ago
Solve to the correct order
Marianna [84]

32^3/5 = 8

64^2/3 = 16

81^1/4 = 3

49^1/2 = 7

125^2/3 = 25


 now just put them in order from the smallest value to the largest

5 0
3 years ago
504,047 written in expanded form
Nutka1998 [239]

Answer:

500,000 + 4,000 + 40 + 7

<h2>BRAINLIEST please if this helped!</h2>
5 0
2 years ago
A class of 165 students went on a field trip. They
navik [9.2K]

answer

the number of buses is 3

the number of cars is 6

Step-by-step explanation:

total number of the students=165

total number of the vehicles=9

let x represent the number of cars

let y represent the number of buses

x+y=9...........equation 1

(the number of the cars plus the number of the buses= to the number of vehicles )

5x + 45y=165.......equation 2

(the number of student the car can hold plus the number of student the bus can hold= to the total number of the student in a class)

x+y=9.......eqn 1

5x +45y=165....eqn 2

make x the subject of the formula in eqn 1

x+y=9

x= 9-y

substitute for x= 9-y in eqn 2

5(9-y)+45y=165

45-5y+45y=165

-5y+45y=165-45

40y=120

divide both sides by 40

40y÷40=120÷40

y=3

since y represent number of buses,the numbet of bus is 3

Also,substitute for y=3 in eqn 1

eqn 1 is x+y=9

x+3=9

x=9-3

x=6

therefore,the number of cars is 6.

3 0
3 years ago
Point
ololo11 [35]

Your question is poorly formatted; However, the correct question is:

Point  A  ( 3 , 4 )  and point  M  (5.5,0) is the midpoint of point  A and point B. Determine the coordinates of B

Answer:

The coordinates of B is (8,-4)

Step-by-step explanation:

Given

Point  A  ( 3 , 4 )

Point  M  (5.5,0)

Required

Determine B

Since, M is the midpoint;

<em>We'll solve this question using the following formula;</em>

M(x,y) = (\frac{x_1 + x_2}{2},\frac{y_1 + y_2}{2})

Where (x,y) = (5.5,0) and (x_1,y_1) = (3,4)

Substitute values for x, y, x1 and y1 in the above formula;

This gives

(5.5,0) = (\frac{3 + x_2}{2},\frac{4 + y_2}{2})

By direct comparison, we have

5.5 = \frac{3 + x_2}{2}  and 0 = \frac{4 + y_2}{2}

Solving 5.5 = \frac{3 + x_2}{2}

Multiply both sides by 2

11 = 3 +x_2

Subtract 3 from both sides

11- 3 = x_2

x_2 = 8

Solving 0 = \frac{4 + y_2}{2}

Multiply both sides by 2

0 = 4 + y_2

Subtract 4 from both sides

0 - 4 = y_2

y_2 = -4

Hence;

<em>The coordinates of B is (8,-4)</em>

3 0
3 years ago
Other questions:
  • The mean of the numbers 5,15,15,7,20,15
    15·1 answer
  • Please help me I really need this please help me I will pay please help me please help me please help me
    13·1 answer
  • (x+6)(x-4)<br> Multiply using the distributive property
    5·1 answer
  • Which statement correctly names the congruent triangles and justifies the reason for congruence?
    5·2 answers
  • 7 1 <br> - -<br> 8 6 <br> its multiplying please help
    9·1 answer
  • See attachment. PLEASE HELP ASAP!!!!! Thank you!!!!
    15·2 answers
  • Jacob ate 21 chips ahoy cookies in 1 hour and Bryant ate 25 chips ahoy cookies in the same time, at this rate, how mant whole co
    14·1 answer
  • Which range of y values makes
    5·1 answer
  • In a study of texting speed, 45 adults aged 18-22 were randomly chosen. Each person was asked to the following phrase exactly "H
    7·1 answer
  • A box of tangerines that weighs 5 pounds costs $4.25.<br> What is the cost per pound?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!