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
Brrunno [24]
3 years ago
14

joe and Eric have to ship 75 packages. Joe can do the job alone in 5 hours. if Eric helps, they get it done in 4 hours. How long

would it take Eric to do the job alone?​
Mathematics
1 answer:
Umnica [9.8K]3 years ago
8 0

Eric took 20 hours to do the job alone.

<u>Step-by-step explanation</u>:

<u>Given </u>:

  • Total work = 75 packages
  • Joe took 5 hours to complete the total work.

The amount of work Joe alone can do per hour = 75/5 = 15 packages.

The amount of work Joe and Eric together do per hour = 75/4 = 18.75

The amount of work Eric alone can do per hour = 18.75 - 15 = 3.75

The time Eric took to complete the entire work = 75 / 3.75 = 20 hours.

You might be interested in
Identify intervals on which the function is increasing, decreasing, or constant. g(x) = 4 - (x - 6)2 (5 points)
leva [86]

Answer:

g(x) is always decreasing

Step-by-step explanation:

Step 1: Distribute

g(x) = 4 - (2x - 12)

g(x) = 4 - 2x + 12

Step 2: Combine like terms

g(x) = -2x + 16

Since the line is linear and has a negative slope, it will always decrease when you input either a positive or negative x value. The output <em>y </em>will go lower.

4 0
3 years ago
7. Fred had 85 marbles. After a few games, he had 120% of his original number. How many
Gnoma [55]

Answer:

102 marbles

Step-by-step explanation:

100% of 85 is 85.

20% of 85 = 17

85 + 17 = 102

Hope that helps!

4 0
3 years ago
How do I divide whole numbers by fraction? (Ex: 12 ÷ 1⁄2)
Readme [11.4K]
That would be 6 just put the the whole number over one and keep flip change
7 0
2 years ago
Read 2 more answers
4. An airplane descends at a rate of 1,400 feet per minute. Once the airplane starts its descent, what will be its change in ele
Evgesh-ka [11]

Answer:

5600 feet

Step-by-step explanation:

If it is dropping 1400 every minute then to find the elevation at 4 minutes, you have to multiply 1400 with 4.

5 0
2 years ago
Please help me I really need help
Oliga [24]

Answer:

Step-by-step explanation:

(1) 2x - 6y = -12

(2) x + 2y = 14

There is a -6y and a +2y. Since they have opposite signs, I'll try to eliminate the y terms. (That's my choice. There is more than one way to solve these.)

Multiply eq. (2) by 3:

3x + 6y = 42

Then add the result to eq. (1) to eliminate the y terms:

2x - 6y = -12

3x + 6y = 42

------------------

5x   = 30,  so x = 6

Now plug the value of x into eq. (2) and solve for y:

6 + 2y = 14

2y = 8

y = 4

Why did I use eq. (2) to solve for y? Because it's less work. I could have used eq. (1) instead:

2(6) - 6y = -12

12 - 6y = -12

-6y = -24

y = 4

More than one way to solve.

5 0
3 years ago
Other questions:
  • CAN ANYONE HELP ME WITH THIS PLSSSSSSSSSSSSSSS
    11·1 answer
  • Audrey read that the area of a new shopping mall is 57,600square feet. What are the greatest and least possible actual areas of
    7·1 answer
  • I wanna buy 3/8 a pound of Swiss cheese and 1/4 pound of American cheese.which pairs of fractions are equivalent to the amount a
    13·1 answer
  • There are 52 weeks in a year. Ben has lived in london for two fifths of year. How many weeks has ben lived in london?
    13·2 answers
  • What’s The definition of linear in Math
    10·2 answers
  • Identify the midline of the graph
    8·2 answers
  • What percent of 130 is 45.5?
    15·1 answer
  • Someone help please ASAP
    7·2 answers
  • Which statement is true?
    14·2 answers
  • By what factor would your weight be multiplied if earth's diameter were 1/ 4 as big and earth's mass remained unchanged?.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!