Recent content by RMHAZARD

I am on my final part of my C3 coursework, doing the comparison of methods, i have found the root using the change of sign method, and the Newton raphson method but i am struggling with using the rearranging method. the equation i am using is x^3 +5x -4, i have tried rearranging it to get the...

hi i have a whole page of bionomial expansion homework from as teacher and have never encountered it before here is an example of one of my questions could someone please show me how its done. example: find the coefficient of x (cubed) in the expansion of (2 + 3x) (to the power of 5) i am...

yeah that's what i meant thanks for your help.

thanks dick i see that now. so this one (5 +3√2) - (5 - 2√2) would (5-5) (2+3√2) so it would be 5√2 is my math right?

Hi i have just started A lvel maths and we are doing surds, i was never taught this in secondary school so i am at a complete loss. I have barly understood the basics but struggled when having to simplify equations Such as (3 + √2) + (5 + 2√2) I know the answer is 8 + 3√2 but can not...

the density is the heviyness of an object and as for the second part is it 125000 the answer as 135 grams times 50 ^3 am i right

i am conpletly lost

and they would be?

hi where would i start if i wantied to do this could you please tell me the formulas i need or how i should aproch it A metal object has a mass of 135 g and is submerged in water. it displace 50 cm^3 of water. Calculate the density of the metal and weight of the metal under the water.answer...

so 10 hours is 600 minutes 36000 seconds and 60 watts goes goes in in 36000 2160000 so 15% 324000 am i right

so 60 watts divided by10 hours which is 6 15% of 6 is 0.9 if i am correct can you please tell me if i am right if not can you advive me where i went wrong

so do i divide watts by time taken?

hi here is the question A 60 watt light bulb is left swithed on for 10 hours. If the light bulb is 15% effcient, calculate the amount of light energy produced in that time. what is the total energy consumption of the light bulb in this time. so i need to find work done right so is that...

HI WHAT UNITS DO U MEASURE pOTENIAL ENERGY AND KINETIC Energy in please

yes thank you for all your help you really helped me thanks