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
Marysya12 [62]
3 years ago
6

Ted can clear a football field of debris in 3 hours. Jacob can clear the same field in 2 hours. When they work together, the sit

uation can be modeled by the equation, where t is the number of hours it would take to clear the field together.
How long will it take Ted and Jacob to clear the field together?
Mathematics
2 answers:
Mandarinka [93]3 years ago
7 0

Answer:

\frac{6}{5} of an hour = 1 1/5 hour = 72 minutes

Step-by-step explanation:

\frac{1}{3} h + \frac{1}{2}h = 1\\\\\frac{2}{6} h + \frac{3}{6}h = 1\\\\\\\frac{5 }{6} h  =1\\\\h=\frac{6}{5}

Nataly_w [17]3 years ago
3 0

Answer:

the answer is C. 1 hour 12 minutes

Step-by-step explanation:

You might be interested in
Given three balls and four boxes. Assume the boxes are numbered 1, 2 ,3 and 4.Place the ball one by one into the boxes randomly.
KengaRu [80]

Answer:

The value of E(X) is 1.56

Step-by-step explanation:

Number of Boxes=4

Number of Balls =3

If X is the number of box in which the balls are than the number of balls in the box are given as ((4-X)+1)^3

Number of ways such that all the balls are in the box number 4, no balls in the first three boxes is given as n(x=4)=1^3=1

Number of ways such that all the balls are in the box number 3,  is given as n(x=3)=n(x=2)-n(x=4)=2^3-1^3=7

Number of ways such that all the balls are in the box number 2,  is given as n(x=2)=n(x=1)-n(x=3)=3^3-2^3=19

Number of ways such that all the balls are in the box number 1,  is given as n(x=1)=n(x=4)-n(x=3)=4^3-3^3=37

So the total number of ways are

n(total)=n(x=4)+n(x=3)+n(x=2)+n(x=1)

n(total)=1+7+19+37=64

So Probabilities are given as

p(x=1)=n(x=1)/n(total)=37/64

p(x=2)=n(x=2)/n(total)=19/64

p(x=3)=n(x=3)/n(total)=7/64

p(x=4)=n(x=4)/n(total)=1/64

So the E(x) is given as

E(X)=\sum^{n}_{i=1}p_ix_i\\E(X)=\sum^{4}_{i=1}p_ix_i\\E(X)=x_1p_1+x_2p_2+x_3p_3+x_4p_4\\E(X)=1\times\dfrac{37}{64}+2\times\dfrac{19}{64}+3\times\dfrac{7}{64}+4\times\dfrac{1}{64}\\E(X)=\dfrac{25}{16}=1.56

So the value of E(X) is 1.56

5 0
3 years ago
I need help, the question is “What is the slope, m, and y-intercept for the line that is plotted on the grid below?”
vlabodo [156]

Answer:

m = 2, (0,4)

Step-by-step explanation:

Slope is 2

Y intercept is 0,4

3 0
2 years ago
What Is the slope of the line on the graph?
sashaice [31]

Answer:

1/2

Step-by-step explanation:

To find out this problem, you do rise over run to find the slope. First choose two points that are directly sitting on a line. I used (-2,1) and (0,2). Then count the rise, up 1, then the run, over two and that's how you get your answer. :)

3 0
3 years ago
Read 2 more answers
A rectangular poster has an area of 34 square feet. It is 4 and one fourth feet wide at its base. What is the height of the​ pos
lora16 [44]
The height of the poster is 8 feet.
6 0
2 years ago
Read 2 more answers
in a School the monthly fee of a child is ₹ 497 . If there are 2983 students in a school ,find the total fee collected in a mont
Digiron [165]

Answer:

1482551 is correct answer

8 0
2 years ago
Other questions:
  • in a survey of 2700 people who owned a certain type of car, 675 said they would buy that type of car again. What percent of the
    7·2 answers
  • Part 1: Find the tangent line approximation to cos x at x=π/4.
    8·1 answer
  • Red bird starts his flight from points (10,0). His flight path reaches a maximum height of 18 yards and lands at points (38,0).
    10·1 answer
  • ✓-36= -6 <br><br> True or False?
    10·1 answer
  • A baker used 3/16 cup of sugar. Then she used another 1/2 cup of sugar. How much sugar did she use in all?
    11·2 answers
  • Which of the following angles have a greater measure than angle 5
    6·2 answers
  • I need help in this question :(
    13·1 answer
  • Which angles are vertical to each other
    10·1 answer
  • The question is in the pic pls help
    5·1 answer
  • Order the fallowing numbers least to gratest -4 2 3 1<br><br><br> PLEASE I NEED HELP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!