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The length of the ladder nearest hundredth of a foot is 23 feet.
We have given that,
An electrician leans an extension ladder against the outside wall of a house so that it reaches an electric box 20 feet up.
The ladder makes an angle of the ground.
Therefore we get,
Therefore, The length of the ladder nearest hundredth of a foot is 23 feet.
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<u>Answer:</u>
According to Question , a plane travels 120 miles in 2 hours. So here we will use unitary method .
Here it was a case of direct proportion in which if two things are directly proportional to each other. If one thing thing increases then the value of second also increases. Here if the time increases then the distance also increases
Answer:
x = ± 2
Step-by-step explanation:
given
40 - x² = 0 ( add x² to both sides )
40 = x² or
x² = 40 ( take the square root of both sides )
x = ± = ±
= ± 2