1 answer:
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Answer:
44
Step-by-step explanation:
Given that Avi used 11 toothpicks to form a row of 5 attached triangles.
Total number of toothpicks used = 89
Let the total number of triangles formed be represented by x, so that:
11 toothpicks = 5 triangles
It would be observed that only the first triangle starting the pattern has 3 toothpicks. So that;
the average number of toothpicks for 1 triangle =
= 2.2
The number of toothpicks per triangle = 2.0
Thus,
x =
= 44.5
x = 44
The total number of triangles formed is 44.
Answer:
Step-by-step explanation:
General equation of a parabola that opens up is , a>0
So equation becomes which implies option A and option B can never be true for this parabola.
Also this parabola's vertex lies in 3rd quadrant where coordinates of both x and y will be negative.
So, the equation of parabola will be of the form
Hence, option 4 that is is correct.