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]
3 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]3 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
Find the slope of the line passing through the points given below or state that the slope is undefined. Then indicate whether th
Varvara68 [4.7K]

QUESTION A

The given points are

(x_1,y_1)=(8,3) and (x_2,y_2)=(9,8)

The slope can be found using the formula;

m=\frac{y_2-y_1}{x_2-x_1}

We substitute the point to obtain;

m=\frac{8-3}{9-8}

This simplifies to

m=\frac{5}{1} =5

Therefore the slope is 5.

QUESTION 2

A positive slope indicates a rising line

A negative slope indicates a rising line

A zero slope means the line is horizontal.

An undefined slope means the line is vertical.

The correct answer is

A. The line rises from left to right.

3 0
3 years ago
Read 2 more answers
A horse ate 1.8 pounds of grass in 4 days how many grass can the horse eat for 7 days
jolli1 [7]
i think the answer to this is 3.15
4 0
3 years ago
Read 2 more answers
Can someone please answer letter F ? It applies to the question 4 and the graph on the right , it’s not long .
kherson [118]
F(x)=2x
I would write that since x represents the weeks and we know that she watches two movies a week
6 0
2 years ago
What is a rational number
siniylev [52]

It's a number that can be expressed as a fraction, the numerator and the denominator of which, are integers.

7 0
3 years ago
si tenemos que llenar cuatro cilindros de capacidad 72;24;56 y 120 galones respectivamente,¿cual es la maxima capacidad del bald
adelina 88 [10]
37 porquwe si no n opuedes tener lo
6 0
3 years ago
Other questions:
  • A 5000 seat theater has tickets at $27 and $40. How many tickets should be sold at each price for a sellout performance to gener
    5·1 answer
  • Math question please help <br> If you get this right I will mark you as a brainliest
    7·1 answer
  • Need help with this question
    11·1 answer
  • An elephant can run one over four mile in 36 seconds. Which of the following correctly shows this rate as miles per hour?
    9·2 answers
  • What conclusions can you make from the information below? Check all that
    13·1 answer
  • This timeframe shows 5+8 Draw to make 10. then write the new fact
    15·1 answer
  • Solve the expression for x: (4-2)(x-2)=4x-8
    9·1 answer
  • Please help me! I don't know
    10·1 answer
  • On a trip from Indianapolis, Indiana, to Houston, Texas,
    6·1 answer
  • You are taking a trip at the same time as another
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!