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
lesantik [10]
2 years ago
5

Tim used a lever to lift a heavy box off the ground. His input work was 50 J and the output work was 40 J. What was the mechanic

al efficiency of the lever?
A.90%
B.30%
C.80%
D.10%
Mathematics
1 answer:
solong [7]2 years ago
5 0
Answer:C

Explanation: 40 divided by 50 is .80
Equaling 80%

You might be interested in
Solve 26×6 using distributive
Cerrena [4.2K]

Answer:

Step-by-step explanation:first use parenthisis to seperate it and make it eisier to solve..sorry if my spelling is bad..

3 0
3 years ago
Read 2 more answers
I need help with 18-19​
Svet_ta [14]

Answer:

18-19= -1  

Step-by-step explanation:

18-19=-1

Sweetheart, you cant subtract a smaller number from an bigger number or it will be a negitive number so the answer is -1

8 0
2 years ago
Read 2 more answers
How do you do one-step equations?
strojnjashka [21]
An example of a one step equation would be 5+5=10
But equations with more than one step would be like: find the sum of 5+5 and then find 50% of the sum of 5+5

6 0
3 years ago
Solve equation <br><br> m Divided by 4+6=3
aleksandr82 [10.1K]

Answer:

m= -3/4

Step-by-step explanation:

m÷4+6= 3

m÷4= 3-6

m÷4= -3

m= -3/4

4 0
3 years ago
Help I don’t understand this appreciate any help
ella [17]
Theres nothing attached..
5 0
2 years ago
Read 2 more answers
Other questions:
  • A table with 4 legs will sometimes wobble if one leg is shorter than the other three, but a table with three legs will not wobbl
    5·1 answer
  • Find the difference 18-15
    14·2 answers
  • What is the exact circumference of a circle with a radius of 12 inches?
    10·2 answers
  • Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical fact
    12·1 answer
  • What is the probability of flipping a coin 4 times and it landing heads every time?
    10·1 answer
  • Select the best answer for the question 7/8=?/48
    14·2 answers
  • Which equation represents a line that passes through (4,1/3)and has a slope of 3/4
    5·1 answer
  • Which expression is not equivalent to 2x^2+10x+12
    8·1 answer
  • Brainliest to the answer. please help !
    10·1 answer
  • Find the surface area of an open-top box with length 5 cm, width 6 cm, and height 4 cm.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!