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
MariettaO [177]
3 years ago
14

If Richard can paint their living room in 4 hours, and Vanessa can paint the same living room in 5 hours, then how long will it

take them to paint the living room working together?
Mathematics
1 answer:
Tju [1.3M]3 years ago
4 0

Answer:

2 hrs 13 mins

Step-by-step explanation:

If Richard can paint the living room in 4 hrs, then in 1 hour he can paint 1/4 of the living .

If Vanessa can paint the living room in 5 hours, then in one hour, she can paint 1/5 of the living room.

In one hour Richard and Vanessa can paint 1/4 + 1/5 = 1/y

y is the number of hours it will take both Richard and Vanessa to paint the living room. 1/y is how much of the house they can paint in one hour.

1/4 + 1/5 = 1/y

(5 + 4)/20. ( find the LCM)

9/20 = 1/y

9y= 20

y = 20/9

y = 2.22hrs

y = 2 hrs 13 mins

You might be interested in
Pls help!! will give all my points
sergejj [24]

when x=-2

-10(-2)+y=4

y=4-20

y=-16

when x=-1

-10(-1)+y=4

y=-6

when x=0

-10(0)+y=4

y=4

when x=1

-10(1)+y=4

y=14

when x=2

-10(2)+y=4

y=24

8 0
3 years ago
Read 2 more answers
What is the absolute value of -3?<br><br><br> 3<br> - 1/3 <br> -3<br> 1/3
Nezavi [6.7K]
The absolute value of -3 is 3 and -3 so both would be right
5 0
3 years ago
15x+8=6x+2<br><br> Find X please I beg you I have to feed my kids
Rzqust [24]

Answer:

15x+8=6x+2\\9x+8=2\\9x=-6\\x=-6/9 or -2/3\\Hope this helps plz hit the crown :D

4 0
3 years ago
Read 2 more answers
Consider the arithmetic sequence:
prisoha [69]

Answer:

<em>Answer: D</em>

Step-by-step explanation:

<u>Arithmetic Sequences </u>

The arithmetic sequences are those where any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.

The equation to calculate the nth term of an arithmetic sequence is:

a_n=a_1+(n-1)r

Where

an = nth term

a1 = first term

r   = common difference

n  = number of the term

We are given the arithmetic sequence:

10, 12, 14, 16, ...

Where a1=10 and

r = 12 - 10 = 2

Thus the general term is:

a_n=10+(n-1)2

Operating:

a_n=10+2n-2

a_n=8+2n

Answer: D

4 0
3 years ago
Read 2 more answers
Is it Equivalent 5/10 95/100
Umnica [9.8K]

Answer:

No

Step-by-step explanation:

10 times 10 equal 100

5 times 10 only equal 50.

Not equal.

Hope this helps.

4 0
3 years ago
Other questions:
  • Ming drew a triangle. The sum of the angles of the triangle is 180º. In Ming’s triangle, B is twice the measure of A, and angle
    5·2 answers
  • If y varies inversely with 2.5x, and y=5.6 and x=30, write an equation to represent this relationship
    14·1 answer
  • In △JKL, KN=21 m.
    15·2 answers
  • Please help!
    13·1 answer
  • Find parametric equations for the line parallel to r=(6,-8) and passing through P(9,-1)
    13·1 answer
  • Zeller, Inc., has 50,000 shares of stock outstanding. Zeller declares a dividend of $480,000. What is the dividend per share?
    15·1 answer
  • 3x+2=20 PLEASE ANSWER AND EXPLAIN PLEASE I DON’T UNDERSTAND MATH
    8·1 answer
  • Graph the line given by x+y=-2 and the quadratic curve given by y=x²-4. Find all solutions to the system of equations. Verify yo
    8·1 answer
  • I need some answers please like I really don’t know how to do these problems at all
    5·2 answers
  • There are 5 questions listed below. Each question includes:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!