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
7nadin3 [17]
1 year ago
15

Lucia paints a certain room in 5 hours, and Marie paints the same room in 8 hours. How long does it take them to paint the room

if they work together? Round to the nearest tenth.
Mathematics
1 answer:
cluponka [151]1 year ago
6 0

Answer:

3.1 hrs  painting together

Step-by-step explanation:

Lucia rate = 1 room/ 5 hr

Marie rate = 1 room/8hr

now combine the rates

1 room / ( 1/5 + 1/8) = 3.077 hrs

You might be interested in
Out of 100 employees at a company, 92 employees either work part time or work 5 days each week. There are 14 employees who work
Alexus [3.1K]

Answer: 0.02

Step-by-step explanation:

OpenStudy (judygreeneyes):

Hi - If you are working on this kind of problem, you probably know the formula for the probability of a union of two events. Let's call working part time Event A, and let's call working 5 days a week Event B. Let's look at the information we are given. We are told that 14 people work part time, so that is P(A) = 14/100 - 0.14 . We are told that 80 employees work 5 days a week, so P(B) = 80/100 = .80 . We are given the union (there are 92 employees who work either one or the other), which is the union, P(A U B) = 92/100 = .92 .. The question is asking for the probability of someone working both part time and fll time, which is the intersection of events A and B, or P(A and B). If you recall the formula for the probability of the union, it is

P(A U B) = P(A) +P(B) - P(A and B).

The problem has given us each of these pieces except the intersection, so we can solve for it,

If you plug in P(A U B) = 0.92 and P(A) = 0.14, and P(B) = 0.80, you can solve for P(A and B), which will give you the answer.

I hope this helps you.

Credit: https://questioncove.com/updates/5734d282e4b06d54e1496ac8

7 0
2 years ago
What is the unit rate for the Japanese bullet train?
alisha [4.7K]

Answer:

186 Miles per hour.

Step-by-step explanation:

558/3

6 0
2 years ago
F = 2x + y<br> 3x + 5y = 45 x20 and y20<br> 2x + 4&lt;32
ipn [44]

Answer:

a

Step-by-step explanation:

6 0
3 years ago
I know how to find slope I need help finding out what to do after that
Liula [17]
I think its letter D because x + 2y fits with the equation and there for -3
5 0
3 years ago
Read 2 more answers
At work, Elon takes a break 1/5​​ of each hour he works. He also takes a lunch break for 1/2​​ of an hour each day he works. Elo
Anton [14]

Answer:

h=50\ hours

Step-by-step explanation:

Let

h -----> the number of hours, Elon works during one 5​-day work week

we know that

12\frac{1}{2}\ h=\frac{12*2+1}{2}=\frac{25}{2}\ h

Elon’s break time must be equal to 1/2​​ of an hour multiplied by 5 days plus  1/5​​ multiplied by the total hours h

so

\frac{25}{2}=5(\frac{1}{2})+\frac{1}{5}h

Solve for h

Multiply by 10 both sides to remove the fraction

125=25+2h

2h=125-25

2h=100

h=50\ hours

8 0
3 years ago
Other questions:
  • Find the dual of each of these compound propositions. b) (p /\ q/\ r) v s
    12·2 answers
  • The height of a trapezoid is 8 in. And its area is 64 in2. One base of the trapezoid is 6 inches longer than the other base. Wha
    6·1 answer
  • What is the name of the period that has the 913
    5·1 answer
  • A recycling center pays 2 cents per aluminum can and 5 cents per glass bottle. The equation 2x+5y=100 describes the number of ca
    13·1 answer
  • Mrs. Eaton's class is participating in the "Box Tops for Education" campaign. On the first day, her
    12·2 answers
  • Solve the system by using a matrix equation
    10·2 answers
  • Amy had $36 when she got
    11·1 answer
  • An isosceles triangle has two angle measurements of 80 and 50 degrees. Could more than one triangle be drawn that fits these con
    13·1 answer
  • The temperature on Sunday was 82 degrees Fahrenheit. On Wednesday the temperature rose 3°F. Find the percent of increase. Round
    7·1 answer
  • WILL MAKE BRAINLIEST Determine the value of x<br><br>a) 7.8<br><br>b) 4.62<br><br>c)6<br>d) 0.22​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!