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sdas [7]
3 years ago
9

What is the efficiency of a machine that produces 4500 joules of output work for every 4250 joules of input work? (remember to p

ut it in correct units and round to the hundredths place)
Mathematics
1 answer:
rewona [7]3 years ago
4 0

Answer:

105.88%

Step-by-step explanation:

Efficiency:

Output/input × 100

4500/4250 × 100

105.8823529%

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The graph shows the speed of sams car over time which best describes what is happening in section c
JulsSmile [24]
The graph is missing, so I am using a graph for a similar question.

It migh even be the same question, but the important thing is that I am going to explain you the situation in several sections of this diagram and so you will be able to work this kind of problems by  your selfl.

The graph is attached (see the figure).

The graph shows the evolution of the speed (vertical-axis) over time (horizontal-axis).

In the section A, the speed increases linearly: so the car is speeding up uniformly (constant acceleration).

In the section B, the line is horizontal which shows that the speed is constant. That is a uniform motion.

In the section C, the speed is decreasing uniformly, so the car is slowing down with uniform negative acceleration.

So, for this graph, the answer is: in the setion C. the car is slowing down (uniformly).

8 0
3 years ago
Can y’all plz help and thank you. Aslo hope y’all have a wonderful and beautiful day.
stepan [7]

Answer:

a) Rumble: $1

Pedal: $0.6

b) more than 5 songs

c) No, should be integers only

d) No, has to be integers greater than or equal to 2

Step-by-step explanation:

Part a

Rate per song is the slope.

Rumble:

Slope is 0.6

Rate is $0.6 per song

Pedal:

Slope: (4-2)/(2-0) = 1

Rate is $1 per song

Part b

Pedal would be a better deal if it's cost is lower than Rumble's

Rumble's cost: C = 2 + S

Pedal's cost: C = 4 + 0.6S

4 + 0.6S < 2 + S

0.4S > 2

S > 5

c) No, because no. of songs has to be positive integers only.

For example graph shows S = 2.5, but we know that's not possible

d) No, since the cost is 2 + S,

cost can't be in decimals either.

Cost too should be only integers greater than equal to 2

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3 years ago
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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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3 years ago
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State the domain of the relation {(0, 5), (5, 2), (0, −4), (1, 5)}.
disa [49]

Answer: B

Step-by-step explanation:

State the domain of the relation {(0, 5), (5, 2), (0, −4), (1, 5)}.

8 0
2 years ago
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