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horrorfan [7]
3 years ago
7

Identify the number rational and irrational 291.7

Mathematics
1 answer:
sertanlavr [38]3 years ago
5 0

Answer:

Rational

Step-by-step explanation:

Any number you can write out completely, or that has a repeating decimal fraction, is a rational number. 291.7 is the entire number, so is rational.

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Answer:

<em>The base is 24 cm long.</em>

Step-by-step explanation:

<u>Equations</u>

Let's call

b= base of the triangle

h=height of the triangle

The base is 9 cm longer than the height, thus:

b = h + 9

The area of the triangle is:

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\displaystyle A=\frac{(h+9)h}{2}

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\displaystyle \frac{(h+9)h}{2}=180

Multiplying by 2:

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Operating:

h^2+9h-360=0

Factoring:

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The only valid positive solution is:

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