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Solve the Simultaneous equations x^2 + y^2 =29, y-x=3.

y=x+3, Substitute into equation 1 : (x^2) + (x+3)^2 = 29Expand the Brackets : (x^2) + (x^2 + 6x + 9) = 29Collect like terms : 2x^2 + 6x - 20 = 0Take out a factor of two : x^2 +3x -10 = 0Factorise : (x-2)(x+5...
TM
Answered by Theo M. • Maths tutor
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Vous êtes en vacances et vous écrivez à votre amie française. Décrivez où vous êtes, vos activités...

Coucou Laura, Je t'écris pour te raconter mes vacances. Je suis à Rome, en Italie avec toute ma famille : mon grand frère, ma petite soeur et mes deux parents. Nous avons pris l'avion de Londres, le voyage n...
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Answered by Florence D. • French tutor
17482 Views

Describe the mass flow hypothesis of translocation.

Photosynthesis occurs in the leaf (source), making sugars: fructose and glucose. These are converted to sucrose and are actively transported into the phloem (sieve tube element) by companion cells. The incre...
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Answered by Simran J. • Biology tutor
27984 Views

Discuss ‘volcanic eruptions always cause huge social impacts’

When Chances Peak erupted on the island of Montserrat in 1997, it caused widespread social devastation. 19 people were killed and 7 injured by the eruption’s hazards such as its ash eruption 40,000ft into th...
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Answered by Samuel B. • Geography tutor
2674 Views

To what extent is soil degradation an issue for humans? (introduction)

Soil is extremely important to sustain human life, with 95% of food coming from soil. Soil degradation has occurred globally due to mass farming and the use of unsustainable techniques such as using heavy ma...
Answered by • Geography tutor
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