The batting wang xiu ying uses to fill quilts has a thermal conductivity rate of 0.030.030, point, 03 watts (\text{w})(w)left parenthesis, w, right parenthesis per meter (\text{m})(m)left parenthesis, m, right parenthesis per degree celsius (^\circ\text{c})(
∘
c)left parenthesis, degree, c, right parenthesis.
what is the batting's thermal conductivity value in

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

practice. practice. practice.

x:       y:  

-1         4

0         4

1         6

2         18

3         20  

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16