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

1/9
BH
Answered by Ben H. • Maths tutor
7291 Views

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
JT
Answered by Juliette T. • Maths tutor
3387 Views

2(y+3) = 10. What is y?

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 = 4Now...
SE
Answered by Sophie E. • Maths tutor
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How far do you agree that British naval superiority over the French in the years 1793 to 1815 was due to technical advances rather than brilliant leadership

Technical Advances:Rear Admiral Charles Middleton, Comptroller of the Navy from 1778 to 1790, had built up the naval infrastructure and technology after weaknesses had been exposed by the War of American Ind...
AC
Answered by Anna C. • History tutor
5665 Views

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
JB
Answered by Jules B. • Maths tutor
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