Thomas is asked to multiply out and simplify (3d - 4)(5d - 2).

he gives the solution 15dsquared - 26d - 8.

thomas is wrong. explain the mistake he has made

15d^2 - 26d + 8

Step-by-step explanation:

Thomas forgot the two negatives make a positive so -8 would actually be +8

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers