PLEASE HELP!!! 30 POINTS!!! NEED ANSWERS. WILL MARK BRAINIEST. FLAGGING NON RELEVANT ANSWER Follow the directions to convert the
analog sound wave into a digital signal. The lines on the grid intersect at various points (x,y). For each whole number value of X, find the intersection point that is closest to the wave. Draw a small circle on that point, and record it’s Y value. The circles for the X values 0 through 3 are already done for you. Draw circles for the X values four through18. Write down all 19 Y values obtained by sampling the wave
The entire building is 20 feet. Fifteen feet of that is from the ground to the first landing of the stairs or fire escape. So 20-15 = 5 feet represents the height of the second set of stairs (leading to the roof of the building)
The base of the triangle is 4 feet as shown in the diagram. The height is 5 feet as found in the prior paragraph. Use the pythagorean theorem to say
a^2 + b^2 = c^2
4^2 + 5^2 = x^2
Note: If you meant to write 4^2+5^2 = x^2 for choice D, then that would be the answer. Otherwise, there is a typo somewhere.