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
maxonik [38]
3 years ago
15

Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 minutes. how long, in minutes

, would it take the 3 of them to wash a car, working together?
a. 10

b. 36

c.

d. 110
Mathematics
1 answer:
choli [55]3 years ago
3 0
B) 36

To figure this out you need to average the numbers. To average them you add them all up and divide by how many are there.
(60+30+20)/3
(90+20)/3
110/3
36
You might be interested in
A+5=5a+5 how do i do this problem
Natali5045456 [20]

Answer:

0 = a

Step-by-step explanation:

The first thing to do is subtract 5 from both sides.

a + 5 = 5a + 5

   - 5          - 5      

The 5's cancel out.

Now we have a + 0 = 5a

You next subtract the a from both sides.

a + 0 = 5a

-a          -a

0 = 4a

Lastly would to get a by itself so then we divide 4 from both sides

0 = 4a

_     _  

4     4

0 = a

5 0
2 years ago
How to evaluate the expression
noname [10]
[(-72) \div (-2)]^3 - (-7) \times (-10)

= [36]^3 - (-7) \times (-10)

=46656 - (-7) \times (-10)

=46656 - (70)

=46586

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


2^3 - 9 \times (2 - 4)

= 8 - 9 \times (-2)

= 8 - (-18)

= 8 + 18

= 26

4 0
2 years ago
4 thousandths times 3 (like this plz 0.004x3)
Ksju [112]

Answer:

0.012

Step-by-step explanation:

0.004 * 3 = 0.012

8 0
3 years ago
Help please 10 points
Mazyrski [523]
Im guessing it would be about 50 degrees
7 0
2 years ago
Read 2 more answers
3 + 11 . (8 - 4) ÷ (5 + 6) - 4
Irina-Kira [14]

Answer:

3

Step-by-step explanation:

3 + 11 ⋅ ( 8 − 4 ) ÷ ( 5 + 6 ) − 4

 Subtract  4  from  8 .

3 + 11 ⋅ 4 ÷ ( 5 + 6 ) − 4

Multiply  11  by  4 .

3 + 44 ÷ ( 5 + 6 ) − 4

Find the common denominator.  

Add  5  and  6 .

3 + 44 ÷ 11 − 4

Write  3  as a fraction with denominator  1 .

3/ 1 + 44 ÷ 11 − 4

Multiply  3/ 1  by  11/ 11 .

3/ 1 ⋅ 11 /11 + 44 ÷ 11 − 4

Multiply  3/ 1  and  11 /11 .

3 ⋅ 11 /11 + 44 ÷ 11 − 4

Write  − 4  as a fraction with denominator  1 .

3 ⋅ 11 /11 + 44 ÷ 11 +  − 4 /1

Multiply  − 4 /1  by  11 /11 .

3 ⋅ 11 /11 + 44 ÷ 11 + − 4 /1  ⋅ 11 /11

Multiply  

− 4 /1  and  11 /11 .

3 ⋅ 11 /11 + 44 ÷ 11 +   − 4 ⋅ 11 /11

Combine the numerators over the common denominator.

3 ⋅ 11 + 44 − 4 ⋅ 11 /11

Simplify each term.  

Multiply  3  by  11 .

33 + 44 − 44 ⋅ 11/ 11

Multiply  − 4  by  11 .

33 + 44 − 44 /11

Simplify the expression.  

Add  33  and  44 .

77 − 44/ 11

Subtract  44  from  77 .

33 /11

Divide  33 by  11 .

3

5 0
3 years ago
Read 2 more answers
Other questions:
  • The library surveyed 240 people about their favorite type of movie. If 15% of those people chose documentaries, how many people
    5·1 answer
  • Which expression is equivalent to (2 + 3) + 5?
    6·2 answers
  • Kathleen says that quadrilaterals have right angles Gray says that quadrilaterals do not have to have right angles explain who i
    12·1 answer
  • Can someone help me simplify it​
    11·2 answers
  • Find the simple interest paid to the nearest cent for each principal, interest rate, and time. $2,620, 3%, and 5 years.
    9·1 answer
  • Find the critical points, domain endpoints, and local extreme values for the function
    10·1 answer
  • Find the value of x that makes m parallel to n.
    12·1 answer
  • A movie theater sells popcorn and fountain drinks. Brett buys 1 popcorn bucket and 3 fountain drinks for his family, and pays $9
    6·1 answer
  • The length of a plot of land is
    8·1 answer
  • Aubrey has $ -24 in her bank account. A store credits her account with a $10 refund. How much does she now have in the bank?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!