5x8= 10x4
40=40
40 is equal to 40
No, the x in 12x2 and 15x could still be factored.
Answer:
D) 11/3
Step-by-step explanation:
Let x represent monthly salary.
We have been given that for each month of a given year except December, a worker earned the same monthly salary and donated one-tenth of that salary to charity.
Salary earned in 11 months would be
.
Money donated in 11 months would be
.
Further we are told that in December, the worker earned N times his usual monthly salary and donated one-fifth of his earnings to charity.
Salary for December would be
.
Money donated in December would be
.
The worker's charitable contributions totaled one-eighth of his earnings for the entire year that is
.

Dividing whole equation by x, we will get:


Combine like terms:






Therefore, the value of N is 11/3 and option D is the correct choice.
Answer:
y= 5/4x -1
Step-by-step explanation:
(5x^2 + x - 4)(x + 2) = x(5x^2 + x - 4) + 2(5x^2 + x - 4) = 5x^3 + x^2 - 4x + 10x^2 + 2x - 8 = 5x^3 + 11x^2 - 2x - 8