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

1/9
BH
Answered by Ben H. • Maths tutor
7553 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
3487 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
5880 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
7837 Views

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 pr...
SB
Answered by Simona B. • History tutor
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