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IrinaVladis [17]
3 years ago
9

What is the y-intercept of the line whose equation is y = 1/2x - 3? A. -3 B. 1/2 C. 3

Mathematics
2 answers:
Ratling [72]3 years ago
8 0
A) y=-3. you add each side 1/2x to each side and that leaves you with -3
nevsk [136]3 years ago
4 0
The answer is A. -3...........
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4 0
2 years ago
Value of cos^2 (48) - sin^2 (12)?
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<span>=(1/2)(1+cos 96) - (1/2)(1-cos24) </span>
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<span>=cos60cos36 </span>
<span>=(1/2)cos36 </span>
<span>and you have to find cos36. </span>
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<span>c=-1 is a root and factorizing gives </span>
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<span>the positive root is therefore cos(36)=(1+√5)/4 </span>
<span>and the required value (1/2)cos(36)=(1+√5)/8
</span>I think this can be very useful
5 0
3 years ago
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