What’s the proportion

Hey there!

“10 / k = 8 / 4”

FIRST: CROSS MULTIPLY

10(8) = 4(k)

10(8) = 80

4(k) = 4k

NEW EQUATION: 80 = 4k

SECOND: FLIP/TURN the EQUATION

4k = 80

THIRD: DIVIDE both SIDES by 4

4k / 4 = 80 / 4

CANCEL: 4 / 4 because that gives you 1

KEEP: 80 / 4 because that gives you the value of k

NEW EQUATION: 80 / 4 = v ; v = 80 / 4

FOURTH: SOLVE above and you have the k-value

k = 5☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

goog may be able to you find that answer

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.