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
Aleks04 [339]
3 years ago
9

A carpenter can do a job in two hours. His assistant can do the same job in three hours. How long would it take them to do the j

ob together?
Mathematics
2 answers:
OlgaM077 [116]3 years ago
5 0

The carpenter makes 1/4 of the job per hour.

The assistant makes 1/6 of the job per hour.

When they work together, they make 1/4 + 1/6 = 6/24 + 4/24 = 10/24 = 5/12 of the job each hour.

Thus, it will take 12/5 = 2 2/5 hours = 2 hours and 24 minuets for them to finish the job working together.

Anuta_ua [19.1K]3 years ago
3 0

Answer:the answer is 2.4 hours

You might be interested in
TEN POINTS!!!!! find the equivalent exponential expression (4^3)^5
Tanya [424]

Answer:

4^15

Step-by-step explanation:

We multiply both exponents 3 and 5

So we get:

4^15

Hope this helps

Good Luck

3 0
3 years ago
What is the area of the figure?<br><br> A.234 in.^2<br> B.315 in.^2<br> C.225 in.^2<br> D.252 in.^2
saul85 [17]

Let's imagine we enclosed the entire shape in a 15 inch wide, 21 inch tall rectangle, area 315 sq inches.

From that rectangle we have to take away the 3x6 bottom left corner, and a strip 21-6=15 inches long and 3 inches wide on the right.

A = 15×21 - 3×6 - 3×15 = 315 - 63 = 252 sq in

Answer: D.   252 inches squared, last choice

5 0
2 years ago
What is 56,276 rounded to the nearest 10t
weeeeeb [17]
<h2>im pretty sure it is... 56,280?</h2>
3 0
3 years ago
Which ordered pair is a solution to the system of equations?
melisa1 [442]

Answer:

(-2, -3)

Step-by-step explanation:

We assume your system of equations is ...

  • 2x - y = -1
  • 2x -4y = 8

You can subtract the second equation from the first to get

... (2x -y) -(2x -4y) = (-1) -(8)

... 3y = -9 . . . . . collect terms

... y = -3 . . . . . . divide by 3 . . . . this is sufficient to identify the correct answer

Substituting into the first equation, we have ...

... 2x -(-3) = -1

... 2x = -4 . . . . . add -3

... x = -2 . . . . . . .divide by 2

Now, we're sure the answer is (x, y) = (-2, -3).

3 0
2 years ago
An airplane travels 6032 kilometers against the wind in 8 hours and 7312 kilometers with the wind in the same amount of time. Wh
Vladimir79 [104]

Answer:

The rate of plane in still air is 834 km/hr and the rate of wind is 80 km/hr.

Step-by-step explanation:

The airplane travels 6032 km in 8 hours against the wind.

So, u -v = \frac{6032}{8} = 754 ........ (1) {Where u is the speed of plane in still air and v is the wind speed}

Again, the airplane travels 7312 km in 8 hours with the wind.

So, u +v=\frac{7312}{8} =914 ........ (2)

Now, adding equations (1) and (2) we get,

2u = 1668

⇒ u = 834 km per hour.

So, from equation (1), we get  

v = u - 754 = 834 - 754 = 80 km per hour.

Therefore, the rate of the plane in still air is 834 km/hr and the rate of wind is 80 km/hr. (Answer)

3 0
3 years ago
Other questions:
  • 111 is what percent of 300
    13·2 answers
  • What THERE numbers below, when added together, total the highest possible score? 47629658
    5·1 answer
  • What is y=-2/5x in standard form
    10·1 answer
  • Tell whether -2 is a solution of the inequality n-5&lt;8
    9·1 answer
  • Given h(x) = 4x2 + 3x – 8, what is the value of h(–9) ?
    5·1 answer
  • The square pyramid shown below has a volume of 360 ft³. find the height of the pyramid ​
    14·1 answer
  • Need help with this
    14·1 answer
  • X/-4 =30 what is X?????
    8·1 answer
  • Please please tell the truth I love the answers please tell them to me
    9·1 answer
  • Luna ordered a package from Amazon. Her package weighed 576 ounces when it was delivered to her door step. Her brother also orde
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!