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lesantik [10]
3 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]3 years ago
5 0
Answer:C

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

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5 0
3 years ago
Read 2 more answers
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Talja [164]

Answer:

The solution is (-\infty,-3)\cup(3,\infty).

Step-by-step explanation:

Given:

The inequality given is:

|x|+4>7

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Adding -4 on both sides, we get:

|x|+4-4>7-4\\\\|x|>3

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4 0
3 years ago
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Step by step solution :

Step  1  :

Equation at the end of step  1  :

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Step  2  :

Equation at the end of step  2  :

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Step  3  :

Trying to factor as a Sum of Cubes :

3.1      Factoring:  6p6+5

4 0
3 years ago
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Angelina_Jolie [31]
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8 0
3 years ago
Area of a triangle 36 ft. By 41 1/2 ft.?
ziro4ka [17]
A=1/2bh A=1/2(36)(41.5) A=747 square feet
7 0
3 years ago
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