The answer to your question would be "A"
7.885
A rational number is a number that can be turned into a fraction. Every number is either rational or irrational.
"B" would be incorrect because if we know the square of an irrational number is always not rational.
"C" would be incorrect because it's not a perfect square.
"D" would be incorrect because it's also not a perfect square.
Answer:
2,250
Step-by-step explanation:
For area you have to multiply the base and width. So 90 times 25 and then you get the answer of 2,250.
Answer: The answer is 381.85 feet.
Step-by-step explanation: Given that a window is 20 feet above the ground. From there, the angle of elevation to the top of a building across the street is 78°, and the angle of depression to the base of the same building is 15°. We are to calculate the height of the building across the street.
This situation is framed very nicely in the attached figure, where
BG = 20 feet, ∠AWB = 78°, ∠WAB = WBG = 15° and AH = height of the bulding across the street = ?
From the right-angled triangle WGB, we have

and from the right-angled triangle WAB, we have'

Therefore, AH = AB + BH = h + GB = 361.85+20 = 381.85 feet.
Thus, the height of the building across the street is 381.85 feet.
Answer:
i believe it's .0386
Step-by-step explanation: