Answer:
Step-by-step explanation:

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Step-by-step explanation:
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Answer:
BC 4 in
Step-by-step explanation:
The steps for construction;
- Using a ruler draw line AB 4 inches and label the end points A and B
- At point A , using a protractor, measure angle 60° and mark with point. Draw a line from A passing through this point extending to a length of 4 inches
- Mark that point C.
- Using the ruler, join point C and B and measure BC.
From calculation, length BC can be found by the formula;
------where a=b=4 in , cos A = cos 60°

BC = 4 in
Answer:
1)
2)
3)
4)2
Step-by-step explanation:
1) 5x + 3y = 8
3y=8-5x

hence intercept is 
2) 10x + 6y - 12 = 4
10x + 6y = 16
6y=16-10x

hence intercept is 
3) 2x – 3y = 5
3y=2x-5

hence intercept is 
4) 3x + 2y = 1
2y=-3x+4

hence intercept is 2