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Find the value of (81)^(-1/2)

1/9

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3 1/2 - 2 1/3

Firstly we need to change each fraction into improper fractions. 7/2- 7/3then we need to give each fraction a common denominator. In this case we will use sixths. 21/6 - 14/6. Ans: 7/6

Answered by Juliette T. • Maths tutor

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So to start this question, we must multiply out the bracket as follows:2 x (y+3) = 10(2 x y) + (2 x 3) = 102y + 6 = 10Now we take away 6 from both sides of the equation:2y + 6 = 10 (NOW TAKE AWAY 6)2y = 4...

Answered by Sophie E. • Maths tutor

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P has coordinates (0, -1) and Q has coordinates (4, 1). a) Find the equation of line PQ. b) P and Q are two vertices of rectangle PQRS. Find the equation of line QR.

a) y = x/2 - 1 b) y = -2x + 9

Answered by Jules B. • Maths tutor

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Why the countries that were allies during WW2 became enemies?

After the World War Two it was clear that fascism as ideology had been buried, it was no longer a threat. However, another ideologically based country not only remained and stood strong but after war also...

Answered by Simona B. • History tutor

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