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Neha and Reha are playing see-saw Neha is sitting 60cm away from the fulcrum and Reha is sitting 40 cm away from the fulcrum .Calculate the effort that Reha should apply to lift Neha. The weight of Neha is 360N. DON'T SPAM OR YOUR ANSWER WILL BE REPORTED PLEASE HELP MEDO IT BY SHOWING PROCESS |
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Answer» ANSWER EXPLANATION: There are two ways to solve this question. The FASTER way is to multiply each side of the GIVEN equation by ax−2 (so you can get rid of the FRACTION). When you multiply each side by ax−2, you should have:24x2+25x−47=(−8x−3)(ax−2)−53You should then multiply (−8x−3) and (ax−2) using FOIL.24x2+25x−47=−8ax2−3ax+16x+6−53Then, reduce on the right side of the equation24x2+25x−47=−8ax2−3ax+16x−47Since the coefficients of the x2-term have to be equal on both sides of the equation, −8a=24, or a=−3.The other option which is longer and more TEDIOUS is to attempt to plug in all of the answer CHOICES for a and see which answer choice makes both sides of the equation equal. Again, this is the longer option, and |
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