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Solve 6x^2-13x=5

To be able to solve a quadratic, you must make it equal to zero. So the first thing you have to do is take away 5 from both sides. You could take away 6x^2-13x from each side, but it is much easier to keep y...
EC
Answered by Eleanor C. • Maths tutor
9363 Views

Which food chain has the highest proportion of energy transfer. Grass -> cow -> human. Grass -> grasshopper -> rat -> snake. Rice -> human

Rice -> human. due to it having the fewest trofic levels (stages in the food chain) with each trofic level energy is lost through heat and movement as well as energy lost due to unabsorbtion in the digest...
RM
Answered by Ryan M. • Biology tutor
4496 Views

How do you know whether to use a or à in a sentence?

If can replace a with 'avait' for instance they you do not need an a with apostrophe. i.e je vais à la cantine. (the sentence would not make sense if you were to replace à with avait hence you need 'à' and c...
DO
Answered by Dominique O. • French tutor
2521 Views

What are the half equations representing the changes of Pb2+ and Br- in the electrolysis of lead bromide?

Pb2+ + 2e- -> Pb 2Br- -> Br2 + 2e- Lead ions undergo reduction (gain of electrons) at the negative electrode to form solid lead. Bromide ions undergo oxidation (loss of electrons) at the positive elect...
SF
Answered by Sophie F. • Chemistry tutor
42178 Views

What observations would I expect to make if I dropped from magnesium into some hydrochloric acid? What is the balanced chemical equation?

Effervescence and the magnesium metal would dissolve. Mg + 2HCl --> MgCl2 + H2
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Answered by Ollie W. • Chemistry tutor
4146 Views