Answer:
steps below
Step-by-step explanation:
1. use ruler to draw a segment of 4 units AB
2. center the compasses needle at A and draw arc with radius of 5 and intersect with another arc centered at B with radius of 3 at point C
3. center the compasses needle at B and draw arc with radius of 4.5 and intersect with another arc centered at A with radius of 2.5 at point D
4. connect BC, CD and AD to form quadrilateral ABCD
The handshake is an illustration of combination, and the values of n and r are 21 and 2, respectively
<h3>How to determine the values of n and r?</h3>
The number of students in the class is 21.
This represents the value of n
i.e. n = 21
Each student shakes hand with another student (i.e. 2 students per handshake)
This represents the value of r
i.e. r = 2
Hence, the values of n and r are 21 and 2, respectively
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1- slope is 4 y intercept 0,2
2- slope is 6 y intercept 0,5
3- slope is 2 y intercept is 0,5
4 -slope is 1 y intercept is 0, 3/4
5- slope is 10 y intercept is 0,3
6- slope is 4 y intercept is 0,1/2
7- slope is 4 y intercept is 0, 3/2
8- slope is 1 y intercept is 0,2
The answer to (7+x)=7x is equal to 8x+7.