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mirandac7747
13.08.2019 •
Mathematics
What is the shape of the cross section taken parallel to the base of a square pyramid?
circle
rectangle
square
triangle
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Ответ:
D) Triangle
Explanation: the sides of a pyramid are triangles
Ответ:
In the first box, B; in the second box, A; and in the third box, C.
Step-by-step explanation:
The sides marked on the triangle would be ranked in order from least to greatest as
n+3, 2n, 3n-2.
This is because for numbers greater than 3 (we are told that n is greater than or equal to 4), adding 3 to a number is less than multiplying it by 2.
Multiplying a number by 2 is less than multiplying a number by 3 then subtracting 2.
To test, use 4:
n+3 = 4+3 = 7; 2n = 2(4) = 8; 3n-2 = 3(4)-2 = 12-2 = 10.
The angles associated with these sides are across from them. The angle across from the side marked n+3, AC, is angle B. The angle across from the side marked 2n, BC, is angle A. The angle across from the side marked 3n-2, AB, is angle C.