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galben [10]
3 years ago
14

ladder 5m tall when set against a wall of house just reach the window at a height 3m how far is the lower end of ladder from the

base of the wall​
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
3 0

Answer:

4

Step-by-step explanation:

A simple matter of using Pythagoras. The hypotenuse is the ladder, and one of the legs is the wall, and we have to figure out the value of the other leg.

The Pythagorean formuda is (hypotenuse = a): a² + b² = c² (b and c are the other sides)

applying the values: a = 5 and b or c is 3 (I'll put b = 3)

5² = 3² + c²

25 = 9 + c²

25 - 9 = c²

16 = c²

√16 = c

4 = c

c = 4

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The life expectancy in the US is 75 with a standard deviation of 7 years. A random sample of 49 individuals is selected. What is
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Answer:

0.02275

Step-by-step explanation:

We use this z score formula to solve for this question

z-score is is z = (x-μ)/σ/√n

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From the above question,

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Hence, the z score = 77 - 75/ (7/√49)

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7 0
3 years ago
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What is 33 over 16 in a decimal
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Answer:

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Because percentage is the numerator divided by the denominator of a fraction times one-hundred, we can set up this equation:

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3 years ago
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