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lord [1]
3 years ago
6

Somebody please answer this fast!!! Show the answer thanks!

Mathematics
2 answers:
Reil [10]3 years ago
8 0

Answer:

7.7cm total width

Step-by-step explanation:

1.2cm+0.8cm= 2cm

2cm+1.9cm= 3.9cm

3.9cm+1.5cm= 5.4cm

5.4cm+2.3cm= 7.7cm

total width= 7.7cm

Oduvanchick [21]3 years ago
4 0
1.2+0.8+1.9+1.5+2.3=7.7cm
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Ann is adding water to a swimming pool at a constant rate. The table below shows the amount of water in the pool after different
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(a)  As time increases, the amount of water in the pool increases.

     11 gallons per minute

(b)  65 gallons

Step-by-step explanation:

From inspection of the table, we can see that <u>as time increases, the amount of water in the pool increases</u>.

We are told that Ann adds water at a constant rate.  Therefore, this can be modeled as a linear function.  

The rate at which the water is increasing is the <em>rate of change</em> (which is also the <em>slope </em>of a linear function).

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\textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{197-153}{12-8}=\dfrac{44}{4}=11

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<u>11 gallons per minute</u>

To find the amount of water that was already in the pool when Ann started adding water, we need to create a linear equation using the found slope and one of the ordered pairs with the point-slope formula:

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\implies y-153=11x-88

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When Ann had added no water, x = 0.  Therefore,

y=11(0)+65

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So there was <u>65 gallons</u> of water in the pool before Ann starting adding water.

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2 years ago
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Step-by-step explanation:

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