If the temperature at the surface of the earth (0 ft) is 100°f, what is the temperature at 2000 feet if the normal lapse rate is 3.5°f/1000 feet?

The temperature on 2000 ft of depth would be 107 Fahrenheit degrees, if we follow the given rules. So if it 100 F degrees on the surface, 2 times by 3,5 on every 1000 feet is 7, so we get 100 + 7 = 107 F degrees.

Answerleveling;

In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.