What did everyone get for c in the last question

Daniel_7788
180

darraghob
i got:
a = 20
b = 120
c = 180
im not entirely sure its right but when i checked with my friend after he said he got the same

sorecauvanesa
I got 180 too I hope it's the right answer

Daniel_7788
And I got 30 and 30 for a and b not sure what order

caolanf
I got a=20, b=120 and c=180

G Kennedy
What is answer to 17 increase by 6% decrease by 6%?

G Kennedy
By the way I got 20 120 and 180 too

Daniel_7788
β¬18.02 and 5.7percent decrease

sorecauvanesa
I got 7. something I can't remember

sorecauvanesa
I meant 5

SryanBruen
I got two answers for C actually... 180 and 0  I got 0 by picking two coordinates and then filling into the slope formula and then filling into the equation of the line formula (y = mx + c). That was one of the few questions I was unsure with.

G Kennedy
Thanks got 5.7 too

rocky123
Sryan bruen you shouldn't have use the y=mx+c formula because this is for the equation of a linear line not a quadratic

SryanBruen
Ino I just realised LOL

SryanBruen
https://www.examinations.ie/tmp/1465579580_6922755.pdf

SryanBruen
Oh wait... how is it a Linear line? Sorry.... the x is squared? How is it Linear? Plus it's a U shape?

SryanBruen
Oh wait I read your thing wrong  Man I feel so dumb right now. Very sorry...

rocky123
Its fine

rocky123
This is a fully worked solution to this part of the question

EH458
Thank god someone else got the same as me ππΌππΌππΌ

Gerardgalv
does someone want to tell me how the y=mx+c works ? isnt this a quadratic as it is a U shape but then it only has one root ? thanks whoever

Gerardgalv
For Question 3 can someone tell me which side the 4 and the 8 went on ?

AubernGene
I got c=180 b=120 and a= 20 would mixing uo the signs lose a lot of marks??

Me
Share files from your computer