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andreev551 [17]
3 years ago
12

Hannah divides the wall into 11 equal sections Hannah paints 1 section herself what fraction of the wall does Hannah paint

Mathematics
1 answer:
morpeh [17]3 years ago
8 0
Hannah paints 1/11 of the wall
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A group of college students developed a solar-powered car and entered it in a race. The car travels at a constant speed of 100 m
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Answer:

A) Distance time graph

B) d(t) = 25t

C) The expression shows the distance more clearly.

Step-by-step explanation:

A) A distance time graph as seen in the attachment provides a representation of the distance travelled.

We are told the car travels at a constant speed of 100 meters per 4 seconds. Which means that 100 m for each 4 hours. So, for 200m, it's 8 hours like seen in the graph and for 300m,it's 12 hours as seen in the graph.

B) And expression for the distance is;

d = vt

Where;

d is distance in metres

v is speed in m/s and t is time

We are told that the car travels at a constant speed of 100 meters per 4 seconds.

Thus, v = 100/4 = 25 m/s

Distance travelled over time is;

d(t) = 25t

C) Looking at both A and B above, it's obvious that the expression of the distance shows a more clearer way of getting the distance because once we know the time travelled, we will just plug it into the equation and get the distance. Whereas, for the representation form, one will need to longer graphs if the time spent is very long.

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3 years ago
There were some people on a train. 19 people got off the train at the first stop. 17 people get on the train. Now there is 63 pe
maria [59]

Answer:

65 people.

Step-by-step explanation:

We have to work backwards.

We end with 63 people, and at the stop we lost 19 people and gained 17.

x - 19 + 17 = 63\\; if x = # people at the beginning

x - 19 + 17 = 63\\x - 2 = 63\\x = 65

There were 65 people on the train to begin with.

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icang [17]
The power of 4 means to move the decimal 4 places to the right. 6.3 x 10^4
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Answer:

(4,-7)

Step-by-step explanation:

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y=-3x+3

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your y in your points in the b in y=mx+b because it's the y intercept and then the slope is -3

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3 years ago
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