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
alexandr1967 [171]
3 years ago
9

Sam can mow a lawn in 40 minutes. Melissa can mow the same lawn in 80 minutes. How long does it take for both Sam and Melissa to

mow the lawn if they are working together?
Mathematics
1 answer:
Sidana [21]3 years ago
4 0

Answer:

It will take them both 24 minutes to mow the lawn if they are working together.

Step-by-step explanation:

Given that Sam can mow a lawn in 40 minutes, and Melissa can mow the same lawn in 80 minutes, to determine how long does it take for both Sam and Melissa to mow the lawn if they are working together, the following calculation must be performed:

1/40 + 1/60 = 1 / X

3X + 2X = 120

X = 120/5

X = 24

Thus, it will take them both 24 minutes to mow the lawn if they are working together.

You might be interested in
The chart below shows conversion between gallons and fluid ounces.
Ainat [17]
<h3>Answer:  768</h3>

======================================================

Explanation:

To go from gallons to fluid ounces (abbreviation fl oz), we multiply by 128

For example, 2 gallons becomes 2*128 = 256 fl oz as shown in the table.

Another example: 3 gallons = 3*128 = 384 fl oz.

Therefore, 6 gallons would be 6*128 = <u>768</u> fl oz.

To go in reverse, from fl oz to gallons, we divide by 128.

5 0
2 years ago
Read 2 more answers
Which of the following is true about radiation from the sun?
bearhunter [10]
This isn't a math question and should be in the science section. However, I will still answer the question. The answer is choice B.

-------------------------------------------------------------------------------------------------------------

Here's a further breakdown

A. False. The radiation or energy from the sun can travel through air or else you wouldn't feel the sun's rays. Also, plant life wouldn't be alive without that energy going through the air.

B. True. The rays travel through a vacuum of space. If they couldn't travel through space, then the same problem comes up as in choice A: the issue of not feeling the sun's rays.

C. False. They rays have different frequencies. Because there are many wavelengths (see choice D below), this means there are different frequencies. Recall that f = 1/w where f is the frequency and w is the wavelength.

D. False. The rays are made of different wavelengths. The visible light portion is what we can see, though there is a lot more to the electromagnetic spectrum (eg: ultraviolet light). 

-------------------------------------------------------------------------------------------------------------

So once again, the answer is choice B
6 0
3 years ago
Solve for x: 5x\10=2 is it (a) 1 (b) 4 (c) 5 (d) 20
OleMash [197]
(b) 4

5(4)/10=20/10=2
6 0
3 years ago
A function has the function rule y = x - 7. If the input is 4, what is the output?
Troyanec [42]

Answer:

-3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
0.3 x 103<br>0 3 x 1025<br>Write the following as an ordinary number. [<br>(1 Point<br>3x10​
Ne4ueva [31]
0.3 x 103 = 30.9
0.3 x 1025 = 307.5

3 x 10^5 = 300,000
3 0
3 years ago
Other questions:
  • suppose the population of a certian city is 3784 thousand it is expected to decrease to 3001 thousand in 50 years find the perce
    7·1 answer
  • What are the values for the coefficients and constant term of 0 = 2 + 3x2 – 5x?
    11·1 answer
  • A sporting goods store received an order of 90 basketball caps of which 18 were green if 1 of the 90 cards is selected at random
    15·1 answer
  • A brother and a sister in the same math class. There are 9 Boys and a girl is in the class. One boy and one girl are randomly ch
    6·1 answer
  • Traveling at 45 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 240 miles from Orla
    14·1 answer
  • Find the value of x ​
    10·2 answers
  • A square shaped patio has an area of 256 ft 2 what are the dimensions of the patio
    15·1 answer
  • Sam and Janet are mountain biking. Sam rides his bike down into a valley, 8 feet below sea level. Janet rides her bike to the to
    10·1 answer
  • Which of these can help you visualize data? Select all that apply.
    13·1 answer
  • 1) The following scatterplot shows the percentage of the vote a candidate received in the 2016 senatorial elections
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!