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Please solve (x+3)(x+4)=20 for x

Expand the double bracket (x+3)(x+4) first: 1) (x)(x)= x^2, 2) (x)(4)=4x ,3) (3)(x)=3x, 4) (3)(4)=12write expanded equation:x^2+4x+3x+12=20simplify and equate the right hand side to zero:x^2+7x-8=0solve for ...
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Answered by Caitilin M. • Maths tutor
2927 Views

Identify and explain two social factors that affect conformity to majority influence.

Asch's extensive studies found a number of factors affecting conformity rates. One was task difficulty. As the task gets more difficult, with the lines in Asch's study getting closer together in size, people...
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Answered by Rose B. • Psychology tutor
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Photosynthesis occurs in the guard cells but not the epidermal cells. Explain why this is important in the control of the rate of transpiration in the plant

Need to figure out what the question is actually askingEssentially the question is explain how guard cells work and what their role isGuard cells will have more sugar than epidermal cells as epidermal cells ...
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Answered by Lucy B. • Biology tutor
9442 Views

Please expand this equation and simplify: (2x + 5)(9x -4)

There are 4 multiplication equations that need to be done:1) (2x) x (9x) = 18x 2 2) (2x) x (-4) = -8x3) (5) x (9x) = 45x4) (5) x (-4) = -20Write this out as an equation: 18x 2 - 8x + 45x - 20 This simplified...
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Answered by Lizkerry O. • Maths tutor
3462 Views

Describe and explain the lock and key model of enzyme action, and how denaturation affects this.

The lock and key model of enzyme action describes how enzymes are specific for their substrates. The enzyme is the lock and the substrate is the key. Much how every key is specific for a lock, every enzyme i...
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Answered by Chloe F. • Biology tutor
7958 Views