Nyesha owns a lawn service company, Currently it takes her 50 hours a week to
service all of her customers. To reduce the
number of hours a week she needs to work,
Nyesha hires Shantese to help her. While
Nyesha was on vacation, Shantese was able
to complete all of the work in 60 hours. If
Shantese and Nyesha work together, after
Nyesha returns from vacation, how long will it
take them to service all their customers?

a

b

d

step-by-step explanation:

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.

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

the answer is 8.64

step-by-step explanation: