<h3>
Answer: Choice D. 4^2+5^2 = x^2</h3>
See note at the bottom
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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.
Answer:
surely it's 200 marbles bc 2/4 is equal to 1/2 and if u then half 400 you get 200
Step-by-step explanation:
The letter A represents the smallest value in the data collection, which would be 17
Make both sides powers of 3:

Make both sides powers of 2:

Answer:
12
Step-by-step explanation:
The parallel sides must be the same length.
2x-6 = x+3
2x-x-6-3 = 0
x - 9 = 0
x = 9
x + 3 and 2x - 6 are both 12