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suter [353]
3 years ago
11

A national interest rate on houses for 25 years is 4.3%. A banker in a large northwestern city believes that the local interest

rates are lower than the national rate. What is the null hypothesis that this banker wishes to test?
Mathematics
1 answer:
stepladder [879]3 years ago
7 0
The national interest rate on houses for 25 years is 4.3%. The banker wishes to test that the local interest rates are lower than the national rate. So he should use the initial data of 4.3% interest as his base data. Then he should investigate the rates of houses in the local vicinities and compare it to his base data. 
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nekit [7.7K]

Answer:

≈ 35.1 ft

Step-by-step explanation:

The model is a right triangle with ladder being the hypotenuse and the angle between the ground and the ladder is 70°

Using the cosine ratio, with l being the length of the ladder.

cos70° = \frac{adjacent}{hypotenuse} = \frac{12}{l} ( multiply both sides by l )

l × cos70° = 12 ( divide both sides by cos70° )

l = \frac{12}{cos70} ≈ 35.1 ( to the nearest tenth )

The ladder is approx 35.1 ft long

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Helen [10]

Answer:

9)

Domain {-2, -1, 1}

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2 years ago
An 8ft length of crown molding costs $12. How much will it cost to buy 40 ft of crown molding?​
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Answer:

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