Option D. The triangle inequality theorem is verified by by showing that a triangle cannot be formed when the sum of the lengths of two sides is less than the length of the third side.
<h3>How to make this proof</h3>
From the given picture we can see the length of the sides. These are 7, 4 and 15.
The length of the two sides cannot join due to the fact that they are less than 15.
4 + 7 < 15
11< 15
Hence the answer is D.
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Answer:
adding both equations
4x+9y=5
-4x+7y=11
+ + =+
________
0 +16y=16
y=1
putting the value of y in first eqn
4x+9×1=5
4x=5-9
4x=-4
x=-1
so the x is -1 and y is 1
Answer:
13.5 in ^2
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 (b1+b2) *h where b1 and b2 are the base length and h is the height
A = 1/2 (4+5) *3
= 1/2 (9) *3
= 1/2 (27)
= 13.5 in ^2
Answer:
what
Step-by-step explanation: