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patriot [66]
3 years ago
14

Is he square root of -144 rational or irrational?

Mathematics
1 answer:
gladu [14]3 years ago
3 0

Answer:

Step-by-step explanation:

Neither.

It is a complex number. The - sign is the culprit. sqrt(-144) = i * sqrt(144) = 12 i

The "i" is an imaginary representation for the square root of -1. It is a definition for sqrt(-1). So a new category of number has been created. The ancients would have been profoundly surprised to learn that such a thing existed.

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In ΔBCD, the measure of ∠D=90°, the measure of ∠C=83°, and DB = 95 feet. Find the length of BC to the nearest tenth of a foot.
Paha777 [63]

Answer:

95.7

Step-by-step explanation:

\sin C = \frac{\text{opposite}}{\text{hypotenuse}}=\frac{95}{x}

sinC=

hypotenuse

opposite

​

=

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95

​

\sin 83=\frac{95}{x}

sin83=

x

95

​

x\sin 83=95

xsin83=95

Cross multiply.

\frac{x\sin 83}{\sin 83}=\frac{95}{\sin 83}

sin83

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​

=

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​

Divide each side by sin 83.

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x=

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​

=95.7134≈95.7 feet

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8 0
3 years ago
The amount earned in dollars for recycling p pounds of copper is 2p. How much do you earn for recycling 28 pounds of copper
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Answer:

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3 0
3 years ago
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