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
qwelly [4]
3 years ago
8

In an elementary school classroom, two students are given the task of cleaning the chalkboard. The first student can clean it by

himself in one minute, while the other student takes 20 seconds longer. Which of the following equations can be used to determine how many seconds it would take for both students to clean the chalkboard if they work together?
Mathematics
2 answers:
aniked [119]3 years ago
7 0

Answer:

I think it's 1/60 + 1/20 = 1/x Thats what I put. Let me know if it works :)

lutik1710 [3]3 years ago
4 0

Answer:

a minute twenty seconds

You might be interested in
Estimates the sum of 1/2-1/3
VladimirAG [237]
<span>decimal: 0.166666667

fraction: 1/6


this is if you were asking the difference which is subtraction, you asked for the sum and the difference
</span>
8 0
3 years ago
Put these numbers in order from least to greatest
Valentin [98]

Answer:

-3 1/3 , - 1 , -1/2 , 0 , 1 , 4 , 5 , 6 , 21/5

5 0
2 years ago
The value of a car is depreciating
olga_2 [115]
32,000 x 3

96,000

Answer: 96,000
5 0
3 years ago
Perform the operation. Enter your answer in scientific notation.<br><br><br> 3.2 × 107 + 7.2 × 108 =
almond37 [142]

Answer:

1, 120

Step-by-step explanation:

    3.2 x 107 = 342.4

                                               

+   7.2 x 108 = 777.6

_____________________

                       1, 120                          

8 0
3 years ago
Read 2 more answers
each block weighs 7 pounds and the wagon can only carry 77 pounds at a time how many blocks can you carry in the wagon at a time
Agata [3.3K]
11 blocks can be carried at a time

Hope this helps :)
4 0
2 years ago
Other questions:
  • Y= 1/4x + 7 y = 1/2x + 5 The y-coordinate of the solution to the system shown is ____
    8·2 answers
  • The graph of f(x) = 2x3 – 19x2 + 57x – 54 is shown below. mc018-1.jpg How many roots of f(x) are rational numbers?
    15·2 answers
  • How much time is 12:53 PM to 2:03 PM
    11·1 answer
  • What is the value of Y in the exponential decay function when x equals 3? Y=0.25x
    6·2 answers
  • Which graph represents the function y – 3 = 3/2 (x-4)
    15·2 answers
  • What is the rational number of 56.7​
    13·1 answer
  • Find the x-intercept and y-interceppt of each graph
    5·1 answer
  • Help!!! please and thank you :)
    12·2 answers
  • PLS HELP ILL GIVE BRAINLIEST
    12·1 answer
  • PLEASE HELP!! ILL GIVE BRAINLIEST!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!