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
grin007 [14]
3 years ago
10

An experience bricklayer can construct a small wall in 3 hours. An apprentice can complete the job in 5 hours. Find how long it

takes if they work together. Show work.
Mathematics
1 answer:
Over [174]3 years ago
3 0

Answer:

Step-by-step explanation:

If the bricklayer can construct the wall in its entirety in 3 hours, then he can get 1/3 of the job done in an hour.

If the apprentice can get the whole job done in 5 hours, then he can get 1/5 of the job done in an hour. If they both work together on said job, the equation is

\frac{1}{3}+\frac{1}{5}=\frac{1}{x} and now we solve for x. Multiply everything by the LCM to get rid of the fractions. That would be 15x:

15x(\frac{1}{3}+\frac{1}{5}=\frac{1}{x}) and doing that gives us

5x + 3x = 15 and

8x = 15 so

x = 1.875 hours which is 1 7/8 hours which is also 1 hour and 52 1/2 minutes.

You might be interested in
A 6-pound container of detergent costs $4.38. what is the price per pound?
lesya692 [45]

Answer:

.73 per pound

Step-by-step explanation:

Take the total cost and divide by the number of pounds

4.38/ 6

.73 per pound

7 0
3 years ago
HELP QUICK! 15 POINTS
almond37 [142]
it will be 8.25 hope this helped
6 0
3 years ago
Write down a number you can square to give an answer bigger than 400 but smaller than 500
Sergeeva-Olga [200]
If you would like to know a number you can square and the answer is bigger than 400 but smaller than 500, you can calculate this using the following step:

20^2 = 400 < 21^2 = 441 < 22^2 = 484 < 500

There are two correct results: 21 and 22.
7 0
3 years ago
Help on number problem 5
Leona [35]

See below for a plot of the equation.

The y intercept is the y location where x=0 and can be found by solving 6y=180, which is y=30.

Likewise, the x intercept follows from y=0, so 4x=180 => x=45.

The interpretation of the intercepts is: what is the plan if you go for all small tables (ie., y=0) or all big tables (x=0). The answer is: you can rent either 30 small tables or 45 big ones.


All the other points on the line represent some mix of small and big tables (of course, x and y must be integer because you can't rent half tables).

8 0
3 years ago
Factor x4 y2 + x3 y3
goldenfox [79]
Your answer is xy^2(4+3y). if u need anything else just tell meh
7 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the slope of the points (-2, -1) and (3, 4)
    6·2 answers
  • I REALLY NEED HELP PLEASE!!  
    5·1 answer
  • I need help with this multiple choice question
    9·2 answers
  • 108 inches equals how many feet?
    8·2 answers
  • Please help fast!!!!!!!!!​
    8·1 answer
  • Divide (y3 + 1) by ( y -1) ​
    8·1 answer
  • 32 tens is the same as what
    8·1 answer
  • Solve 5x2-2x-8=0 using the quadratic formula.
    5·2 answers
  • The table shows a function.
    7·1 answer
  • Help me answer question 1 . ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!