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
To find the height of a trapezoid you can divide its area by 1 -2 of its bases true or false
lys-0071 [83]
True in a couple of ways
4 0
3 years ago
Please and Thank You ​
sergejj [24]

Answer:

its a after about 17.5 billion years of watching shrek it is a

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
WebAssign will do simple calculations for you, using , -, *, /, parentheses, and e-notation. For example, if a question asks for
kondor19780726 [428]

Answer:

10800

Step-by-step explanation:

To solve any equation we use PEDMAS rule(this is the sequence of priorities) where:

P: Parentheses

E: Exponent

D: Division

M: Multiplication

A: Addition

S: Subtraction

In the expression 120\times 90 ,there is only one operation is used that is multiplication.

120\times 90=10800

4 0
3 years ago
A group of cat owners was asked about the number of cats each owns. The results are shown in the frequency table. Number of Freq
Yakvenalex [24]

Answer:

Cats Owned B. 2 3

Hope I helped! :)

8 0
3 years ago
Find the value of p in the figure below.
nirvana33 [79]

From the chord theorem we have:

4\cdot4.5=6\cdot(2p-3)\\\\18=12p-18\\\\12p=18+18\\\\12p=36\qquad|:12\\\\\boxed{p=3}

6 0
3 years ago
Other questions:
  • Karl read 3 times as many books as martina.how many books did karl read
    9·1 answer
  • ANSWER PLZZZZZzzzzzzzzzzzzzzzzzzzzzzzzz
    5·1 answer
  • Counting from 1 to 100, how many 6s will you encounter?
    11·1 answer
  • Write the equation in slope intercept form. y + 6 = -3( x - 4)
    7·1 answer
  • Barb is making a a bead necklace she strings 1 white bead and then 3 blue beads then one white bead and so on write the numbers
    11·1 answer
  • Line A is represented by the equation given below:
    7·1 answer
  • At a bookstore, you buy a calendar for $5 and some books for $3 each. You spend a total of $26. How many
    11·1 answer
  • . Determine if the lines are parallel, perpendicular, or neither to the given line 24x + 12 y = 24
    8·1 answer
  • The quotient of a number and thirty-six is one-nineth
    10·1 answer
  • Pls help meeeee I need to pass
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!