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6x + 2y = 22, 2x + y = 8. Find x and y.

Times second equation by 2.6x + 2y = 22 4x + 2y = 16Cancel the y's to gain equation of just x's. 6x + 2y =22 4x + 2y = 16 - ------------------- 2x = 6 ; x = 3Substitute x into an equation.(2...

Answered by Jacob O. • Maths tutor

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How are mineral ions transported into the root cells from the soil?

Mineral ions are transported into root cells by INDIRECT ACTIVE TRANSPORT/UPTAKE. First of all, hydrogen ions are pumped out of the root cells' vacuoles into the soil. This creates a conc...

Answered by Marta S. • Biology tutor

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How can you factorise quadratics with a an x^2 coefficient higher than one?

If we take an example question such as 20x² - 130 x = -20020x² - 130 x = -200 Divide by 10 to simplify2x² - 13x = -20 Take all of the terms to the left2x²- 13x...

Answered by Vahgisha T. • Maths tutor

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What is the difference between atom economy and percentage yield?

First I will start by defining the two terms. Atom economy is calculated by dividing the total relative molecular mass of the desired product over the total relative molecular mass of the reactants. You c...

Answered by Vahgisha T. • Chemistry tutor

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