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
Dahasolnce [82]
2 years ago
15

Patrick can paint a house by himself in t+4 hours. Karen can paint the same house by herself in t+9 hours. If they work together

, they can paint the house in t hours. How much time will it take for Patrick to paint the house by himself?
Mathematics
1 answer:
vladimir2022 [97]2 years ago
7 0

Patrick will be able to paint the home on his own after a ten-hour effort.

This is further explained below.

<h3>How much time will it take for Patrick to paint the house by himself?</h3>

Generally, the equation for time is  mathematically given as

1/(t+4)  +  1/(t+9)  = 1/t

Therefore

[1/(t+4)] (t+4)(t+9)(t) +  [1/(t+9)](t+4)(t+9)(t) =  (1/t)(t+4)(t+9)(t)  

(t² + 9t)  + (t² + 4t) = t² + 13t + 36

Place the equation on the left side of the page and make it equal to 0. Use the additive inverse property as follows:

t² + t² - t² + 9t + 4t - 13t - 36 = 0

2t² - t² + 13t - 13t - 36 = 0

t² - 36 = 0

Calculate the product of the difference of two squares using the formula t2 - 36 = 0.

Both the total and the difference between the two terms constitute the factors.

(t + 6) (t - 6) = 0

t + 6 = 0

t = -6

t - 6 = 0

t = 6

Choose the positive value for time, t = 6 hours.

It will take 10 hours for Patrick to paint the house alone.

Patrick will be able to paint the home on his own after a ten-hour effort.

Read more about time

brainly.com/question/28050940

#SPJ1

You might be interested in
Find two numbers whose difference is 150 and whose product is a minimum. step 1 if two numbers have a difference of 150, and one
valentinak56 [21]
The lowest possible product would be -5625 given the numbers 75 and -75. 

We can find this by setting the first number as x + 150, which we see in the equation given above. The other number would have to be simply x since it has to have a 150 difference. 

Next we'll multiply the numbers together. 

x(x+150)
x^2 + 150x

Now we want to minimize this as much as possible, so we'll find the vertex of this quadratic graph. You can do this by finding the x value as -b/2a, where b is the number attached to x and a is the number attached to x^2

-b/2a = -150/2(1) = -150/2 = -75

So we know one of the values is -75. We can plug that into the equation to find the second. 

x + 150 
-75 + 150 
75

 
7 0
3 years ago
Hey circle has a diameter of 20.41 feet which measurement is closest to the circumference of a circle in feet?
Angelina_Jolie [31]

Answer:

64.0874 or 20.41pi

Step-by-step explanation:

circumference = diameter x pi

C = D x pi

C  = 20.41pi(lets say pi is 3.14)

C = 64.0874

3 0
2 years ago
What is the value of X?<br><br> 37 x X = 222
balandron [24]

Answer:

87

Step-by-step explanation:

sorry if im wrong

6 0
3 years ago
100 points and brainliest to the first correct answer
matrenka [14]
Okokokokooo ansnwer is?!??

3 0
3 years ago
Read 2 more answers
A researcher claims that 90% of people trust DNA testing. In a survey of 100 people, 91 of them said that they trusted DNA testi
tatuchka [14]

You must know that % is a number out of 100.

Therefore given 91/100 trusted DNA surveying, we know as a percentage this is 91% from the equation below:

(91/100)*100=91

We can conclude that 1%=1 person.

Although the difference is only 1 (91-90=1), the actual proportion of people who trust DNA testing is larger than the 90% by 1%.

5 0
3 years ago
Other questions:
  • What is proportional and non proportional relationship
    11·2 answers
  • Which expression is equivalent to the given expression? 17x−32x
    13·2 answers
  • Connor said, "To the nearest hundred, I've attended school for 800 days of my life!" State 3 numbers that could be the actual nu
    7·1 answer
  • Rewrite this expression in simplest form. Type the correct answer in the box.
    8·1 answer
  • How do the magnetic and electrical components of electromagnetic waves travel in relation to each other ?
    9·1 answer
  • Help I don't know the answer
    10·1 answer
  • Someone pls help me :(
    8·1 answer
  • Divide<br> r2/r12<br><br> Answers<br><br> a. r10<br> b. 1/r6 <br> c. 1/r10<br> d.r8<br> e. r6
    6·1 answer
  • Megan had to find the product of 2^2007 and 5^2000 and then calculate the sum of the digits of the answer. Megan arrived at an a
    11·1 answer
  • Help me please!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!