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blagie [28]
2 years ago
7

Please help me, I would gladly appreciate it. :)

Mathematics
1 answer:
Tems11 [23]2 years ago
7 0
A. Yes it is a function because all the x s are different

B If one of the x s repeated it would not be a function. Example: 4 8

C. Find slope. 7-5/4-3
Slope. 2/1. Or 2

Y=mx+b

7= 2(4)+b
7=8+b
B=-1

Y=2x-1
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Find the area of the equilateral triangle
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Answer:

Step-by-step explanation:

Suppose that the side length is s.  Imagine that one side is level.  Draw a vertical line through the top vertex perpendicular to the base (level side).  Label this vertical line "h."  Then h and s are related as follows:

                               √3          h

sin 60 degrees = ------- = --------

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and so h = the height of the triangle =  -----------

                                                                       2

The area of this triangle is (1/2)(base)(height), which here is:

(1/2)(s/2)( s√3 /2), or

        (s^2)√3

A = ---------------

               8                                

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