9514 1404 393
Answer:
BC ≈ 17.0 (neither Crow nor Toad is correct)
Step-by-step explanation:
The left-side ratio of (2+4)/4 = 3/2 suggests BC is 3/2 times the length DE. If that were the case, BC = (3/2)(11) = 16.5, as Crow says.
The right-side ratio of (5+9)/9 = 14/9 suggests that BC 9 is 14/9 times the length DE. If that were the case, BC = (14/9)(11) = 154/9 = 17 1/9 ≈ 17.1, as Toad says.
The different ratios of the two sides (3/2 vs 14/9) tell you that the triangles are NOT similar, so the length of BC cannot be found by referring to the ratios of the given sides.
Rather, the Law of Cosines must be invoked, first to find angle A (109.471°), then to use that angle to compute the length of BC given the side lengths AB and AC. That computation gives BC ≈ 16.971. (See the second attachment.)
Distance =960 kilometers
Graph the distance (960 kilometers) it traveled is on the y-axis
Time=4 minutes
Graph the time it travels on the x-axis
Answer:
L = the slanted height of the pyramid
Step-by-step explanation:
The surface area of a pyramid is given by :
Where
P is perimeter of base of pyramid
L is the slant height of the pyramid
B is the area of base.
So, the correct option is (c) "the slanted height of the pyramid".
Answer:
33 % is the answer.
Step-by-step explanation:
The value provided is 10 and possible out comes of getting a result is 3 as there are 3 grades namely (A,B and C) are mentioned. When converted to 100s, 100/33 gives 33.33% as the answer, when rounding off gives 33.
Answer:
130 inches
Step-by-step explanation:
The 8'2" rise is 98 inches, so (98 in)/(7 in) = 14 risers are required. Each riser but the first is preceded by a 10-inch tread. The horizontal space between the first riser and the last is 13×10 inches = 130 inches.
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In general, a landing is required at each end of the stairs. That is usually about 3', so a total of 72" + 130" = 202 inches (or 16'10") of horizontal distance may be required. Your building code may vary.
