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
bearhunter [10]
3 years ago
14

It takes Emily eight hours to paint her house. Mike can paint the same area in nine hours. Find how long it would take them if t

hey worked together.
7.58 hours

15.34 hours

3.56 hours

4.24 hours
Mathematics
2 answers:
Olenka [21]3 years ago
7 0

<u>Answer:</u>

It would take them 4.24 hours if they worked together.

<u>Explanation:</u>

We are given that

time taken by emily to paint her house = 8 hours and

time take by Mike to paint the same area = 9 hours

We have to find the time taken by them if the work together, let this be x so x will be given by,  

\frac{1}{8}+\frac{1}{9}=\frac{1}{x}

\frac{9+8}{72}=\frac{1}{x}

x=\frac{72}{17}

= 4.24 hours

which is the time taken by Emily and Mike to paint the house when they do it together.

emmasim [6.3K]3 years ago
4 0

It will take them 4.24 hours together to paint the area together

Step-by-step explanation:

If Emily takes eight hours to paint the area then she will paint 1/8 of the house in one hour

Similarly, if Mike can paint the same area in 9 hours, then he will paint 1/9 of the same area

Let x be the number of hours in which they will together paint the area.

If x hours are taken by them to paint the area then 1/x of the area will be painted in one hour

So,

\frac{1}{8}+\frac{1}{9}=\frac{1}{x}\\Multiplying\ both\ sides\ with\ the\ LCM\\72x\\(72x)*\frac{1}{8}+(72x)*\frac{1}{9}=72x * \frac{1}{x}\\9x+8x=72\\17x=72\\Dividing\ both\ sides\ by\ 17\\\frac{17x}{17}=\frac{72}{17}\\x=4.24\ hours

It will take them 4.24 hours together to paint the area together

Keywords: Linear equation, Variables

Learn more about linear equations at:

  • brainly.com/question/10772025
  • brainly.com/question/10879401

#LearnwithBrainly

You might be interested in
Which graph decreases, crosses the y-axis at (0,-7), and then remains constant?
sergey [27]

Answer:

A.Graph B

Step-by-step explanation:

it decreases to a y of (0,-7) and then stays constant at -7

Hope this was helpful

7 0
3 years ago
What should be subtracted from -8xy + 2x^2 + 3y^2 to get x^2 + 2
Minchanka [31]

Answer:

x^2 - 8xy + 3y^2 - 2

Step-by-step explanation:

(-8xy + 2x^2 + 3y^2) - unknown = x^2 + 2

- unknown = x^2 + 2 + 8xy - 2x^2 - 3y^2

- unknown = -x^2 + 8xy - 3y^2 + 2

Unknown = x^2 - 8xy + 3y^2 - 2

Check:

(-8xy + 2x^2 + 3y^2) - (x^2 - 8xy + 3y^2 - 2)

= -8xy + 2x^2 + 3y^2 - x^2 + 8xy - 3y^2 + 2

= -8xy + 8xy + 2x^2 - x^2 + 3y^2 - 3y^2 + 2

= x^2 + 2

8 0
2 years ago
Q4 Find the missing angle x
BaLLatris [955]

Answer:

Step-by-step explanation:

X = 1/2 arc QS

arc QS is  

360 =145+105+QS

110 = QS

so X is 1/2 QS

X= 55°

5 0
2 years ago
Function g is a transformation of the parent function f(x) = x2. The graph of g is a translation right 5 units
Allisa [31]

Answer:

  C.  y = x^2 -10x +26

Step-by-step explanation:

The translated function is ...

  g(x) = f(x - right) + up

  g(x) = f(x -5) +1

  g(x) = (x -5)^2 +1

  g(x) = x^2 -10x +26

In "y =" form, this is ...

  y = x^2 -10x +26 . . . . matches choice C

6 0
3 years ago
Pls help meee<br>thank you thank you thank you thank you
olga_2 [115]

Answer:

See below

Step-by-step explanation:

11 box 1: 12

11 box 2: 101

12 box 1: 80

12 box 2: 80

12 box 3: 80

13 box 1: 16

13 box 2: 16

13 box 3: 76


20 = y + 12

20 - 12 = y + 12 - 12

8 = y


x + 2 = 19

x + 2 - 2 = 19 - 2

x = 17


z - 313 = 176

z - 313 + 313 = 176 + 313

z = 489

6 0
3 years ago
Read 2 more answers
Other questions:
  • Y=8(x^2+4)+17+-32 in vertex form
    14·1 answer
  • Charlie mixes 15 liters of 17% acid solution with a 29% acid solution, which results in 23% acid solution.
    12·1 answer
  • Tabitha has a deck of cards numbered 1−10. She picks one card, puts it back in the deck and then chooses a second card. What is
    10·2 answers
  • andy earned $38 on monday and $34 on tuesday.how many lucky bamboo plants can he buy with the total money he earned?
    10·1 answer
  • Solve d + (-d)<br><br> A. -2d<br> B. 0<br> C. d<br> D. 2d
    11·2 answers
  • How many ounces are there in 13.5 pounds? Answer without units.
    13·1 answer
  • (1/p-p)(1/p-q)-q/p^2(1/q+qp^2)​
    5·1 answer
  • Do the following side lengths make a right traingle?<br> 11, 60, 62<br><br><br> Yes or no?
    15·1 answer
  • The scale of a map is 1in:15miles. How many miles is it from Philadelphia, Pa to Boston, Ma if they are 20.4 inches apart on the
    6·1 answer
  • Solve for x: -24 = 6x<br> 1/4<br> -4<br> 4<br> - 1/4
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!