andrxxa

4 Questions
0 Answers

+1

3013

1

+17

help asap please!

I have no idea:
David drove a distance (d) of 187km, to 3 significant figures. He used 28 litres of petrol (p), to 2 significant figures.
The petrol consumption (c) in km per litre is given by the formula: c= d/p
By considering bounds, work out read more ..

andrxxa Dec 13, 2018

0

896

1

+17

i made a mistake on my question from before: i meant 5 not 25! sorry!! thanks again!

i made a mistake on my question from before: i meant 5 not 25! sorry!! thanks again!

prove algebraically that the straight line with the equation x = 2y + 5 is a tangent to the circle with equation x^2 + y^2 = 5
read more ..

andrxxa Sep 27, 2018

0

730

1

+17

i need help asap! thanks again!

i need help asap! thanks again!

prove algebraically that the straight line with the equation x = 2y + 5 is a tangent to the circle with equation x^2 + y^2 = 25
read more ..

andrxxa Sep 27, 2018

0

1251

1

+17

i need help asap! thanks

i need help asap! thanks

27 x 9^(3x) can be written in the form 3^k where k is an expression in terms of x
find k read more ..

andrxxa Sep 25, 2018