Teachers at Price Middle School are planning a birthday party for the principal. Planners estimated that 42 slices of cake would be needed. In fact, only 30 slices of cake were eaten. What was the percent error in the estimate of how much cake was eaten? A student solved the problem and showed his work below. What was his error?

false.

step-by-step explanation:

false.

cavalieri's principle makes that statement about the volumes, not about the areas.

throw the computer

step-by-step explanation:

hiking down a winding trail.

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.