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Helga [31]
3 years ago
6

I need to know the answer

Mathematics
2 answers:
noname [10]3 years ago
4 0
It should be B. Thi is because if the temp. was -4 degrees then an hour later it rises 4 degrees then that would be 0. so like this -4+4=0.
Amiraneli [1.4K]3 years ago
3 0
I would say the answer is b, because it states -4 + 4 = 0
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Answer:

The scale of the drawing is \frac{1}{9}\ \frac{in}{ft}

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z ----> the scale factor

x ----> the area of an house on a scale drawing in square inches

y ---> the actual area of the house in square feet

z^2=\frac{x}{y}

we have

x=25\ in^2

y=2,025\ ft^2

substitute

z^2=\frac{25}{2,025}

simplify

z^2=\frac{1}{81}

square root both sides

z=\frac{1}{9}\ \frac{in}{ft}

therefore

The scale of the drawing is \frac{1}{9}\ \frac{in}{ft}

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