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
fiasKO [112]
2 years ago
15

Tim and Jim are working on a school project together. If he had to work by himself, it would take

Mathematics
1 answer:
Vladimir [108]2 years ago
4 0

Answer: 6 hours

Step-by-step explanation:

Given, Tim and Jim are working on a school project together.

Tim takes 10 hours to complete the school project.

If Jim worked alone, it would take him 15 hours

Let t be the time they both take if they work together.

Then, \dfrac{1}{t}=\dfrac{1}{\text{Time taken by Tim}}+\dfrac{1}{\text{Time taken by jim}}

\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{10}+\dfrac{1}{15}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3+2}{30}=\dfrac{5}{30}\\\\\Rightarrow\dfrac{1}{t}=\dfrac{1}{6}\\\\\Rightarrow t=6

So, it will take<u> 6 hours</u> to complete the school project together .

You might be interested in
100 points. Which is the graph of f (x) x - 1/ x2 - x 6
Dovator [93]

Answer: the answer is c

Step-by-step explanation:

5 0
1 year ago
PLEASE HELP QUESTION IS WORTH 16 POINTS I WILL GET AN F IF INCORRECT
Alborosie

Answer:

D)

24

Step-by-step explanation:

5 0
3 years ago
Help with this pls!!!!!!!!
sveticcg [70]

Answer:

san po jan

<h3>step_by istep explanation_</h3>

6 0
2 years ago
Help me answer this question!!!!!
zepelin [54]

Answer:

0

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Let D = {-48, -14, -8, 0, 1, 3, 16, 23, 26, 32, 36} Determine which of the following statements are true and which are false. a)
morpeh [17]

Answer:

\forall x\in D if x is odd then x> 0 is true statement.

\forall x\in D if x is odd then x> 0 is true statement.

\forall x\in D if x is even then x≤0 is false statement.

\forall x\in D If the ones digit of x is 2, then the tens digit is 3 or 4 is true statement.

\forall x\in D if the ones digit of x is 6, then the tens digit is 1 or 2 is false statement.

Step-by-step explanation:

Consider the provided information.

D = {-48, -14, -8, 0, 1, 3, 16, 23, 26, 32, 36}

Part (A) \forall x\in D if x is odd then x> 0

Here only even numbers are less than 0 that means the statement is true.

\forall x\in D if x is odd then x> 0 is true statement.

Part (B) \forall x\in D if x is less than 0 then x is even.

Here only even numbers are less than 0 that means the statement is true.

\forall x\in D if x is odd then x> 0 is true statement.

Part (C) \forall x\in D if x is even then x≤0

Here we can see that 16, 26, 32, 36 are even number and also greater than 0. Thus the statement is false.

\forall x\in D if x is even then x≤0 is false statement.

Part (D) \forall x\in D If the ones digit of x is 2, then the tens digit is 3 or 4.

There is only one number whose ones digit is 2. i.e. 32 also the tens digit of the number 32 is 3. Which makes the above statement true.

\forall x\in D If the ones digit of x is 2, then the tens digit is 3 or 4 is true statement.

Part (E) \forall x\in D if the ones digit of x is 6, then the tens digit is 1 or 2.

Numbers having ones digit 6 are: 16, 26 and 36

Here, the tens digits are 1, 2 and 3 which is contradict to our statement. Hence the provided statement is false.

\forall x\in D if the ones digit of x is 6, then the tens digit is 1 or 2 is false statement.

8 0
3 years ago
Other questions:
  • The two-column proof below describes the statement and reason for proving that corresponding angles are congruent.
    5·2 answers
  • What is the solution of this system of equations?<br><br>y = 3x + 5<br>y = -x + 3​
    11·1 answer
  • Which of the following values is equal to − (−4.3)?<br><br> A) -4.3<br> B) 0<br> C) 4<br> D) 4.3
    15·2 answers
  • Jessica had baseball cards she gave 3 to her friends she now has 9 baseball cards left how many baseball cards did she have to s
    14·1 answer
  • Is the inverse F(x) a function
    6·1 answer
  • 2. Which is a true statement about the table below?<br> Please answer honestly
    15·1 answer
  • Anoheeeeeeeeeeeerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
    11·1 answer
  • Please ASAP. <br> Find the value of x?
    7·2 answers
  • Find all solutions to 6x^4+13x^3–71x^2+67x=15​
    9·1 answer
  • PLEASE ANSWER QUESTION
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!