Question

I attach document

Answer 1

y is the height from arc to water which is 52
so you can replace y with 52\[\huge\rm 52=-0.00211x^2+1.06x\]
now use the quadratic formula to solve for x

Answer 2

set that equation equal to zero then use the quadratic formula \[\huge\rm x=\frac{ -b \pm \sqrt{b^2- 4ac} }{ 2a}\]
a=leading coefficient
b= coefficient of x term (middle term
c= constant term

Answer 3

for 2nd question
just substitute x for each number (From 1 to ) which one give result greater than 1000
feel free to ask question if anything u don't understand :=))

Answer 4

thank you , I was gone just come back

Answer 5

yw :=))

Answer 6

thanks for your help, I'm here now

Answer 7

okay let me know if you have any question
and and os notifications system isn't working i'm not getting ANY notifications

Answer 8

gtg post ur question or if you want me to check ur work post it here
i'll be right back in few hours :=))

Answer 9

number 46 I substitute x = 4
thanks any way I done with my home work

Answer 10

yes that's correct ?
need help with 45 ?? :=))

Answer 11

no , tk