The number of laptops sold daily at a local electronics shop has the following probability
distribution
10
12
X: # of laptops sold
P(X=x)
13
0.1
0.4
0.3
0.2
1. What is the mean of the number of laptops sold on a given day?
a) u = x. p(x) =11
b) u = x. p(x) =12
c) u= x. p(x)=13
d) None
Ans:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation:

27/4x^6 y^8

step-by-step explanation:

4(3x^2y^4)^3 (2x^3y^5)^4

=

108x^6 y^12 /16x^12 y^20

=

108 /16x^6 y^8

=

27 /4x^6 y^8