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Fully expand (2x+4)(4x-3).

Answer:

8x2+10x-12

Explanation:

It is really important that every 'term' is multiplied by every other 'term'. A 'term' doens't just refer to the number but also to the sign...

MH
Answered by Matilda H. Maths tutor
3618 Views

Three forces (4i + 7j)N, (pi +5j)N and (-8i+qj) N act on a particle of mass 5 kg to produce an acceleration of (2i - j) m s 2 . No other forces act on the particle. Find the resultant force acting on the particle in terms of p and q. THEN find p and Q

Three forces : (4i + 7j)N , (pi +5j)N , (-8i+qj) N Mass = 5 kg acceleration = (2i - j) A.Collect like terms (4+p-8)i +(7+5+q)j = (-4+p...

SL
Answered by Shane L. Maths tutor
9048 Views

When do you use the compound past or the imperfect tense in French?

The compound past is used for actions that are completed and have no further relevance at present. For example, "J’ai fini mes devoirs."  

On the other hand, the imperfect...

LB
Answered by Louise B. French tutor
1968 Views

Calculate the mass of sodium amide needed to obtain 550 g of sodium azide, assuming there is a 95.0% yield of sodium azide. Give your answer to 3 significant figures.

2NaNH2 + N2O --> NaN3 + NaOH + NH3

Mr(NaN3) = 65   Mr(NaNH2) = 39    
n(NaN3) = 550/65 = 8.46
100% NaN3 = 550/65 x 100/95 = 8.91
n(NaNH2) = 2 x 8.91 = 17.8
m(NaNH2) = 17....

KM
14732 Views

'Desdemona is a a powerless victim in Othello' to what extent do you agree?

INTRODUCTION:

In Othello, ,Shakespeare keeps within the time and social constraints surronding women when creating the tragic victim, Desdemona. I agree with the statement as although one may argue...

YB
21469 Views

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