3xz+(5x+3z)(7x-2xz+y-4z)

Simplify^

−10x2z+−6xz2+35x2+5xy+4xz+3yz+−12z2

Step-by-step explanation:

Let's simplify step-by-step.

3xz+(5x+3z)(7x−2xz+y−4z)

Distribute:

=3xz+(5x)(7x)+(5x)(−2xz)+(5x)(y)+(5x)(−4z)+(3z)(7x)+(3z)(−2xz)+(3z)(y)+(3z)(−4z)

=3xz+35x2+−10x2z+5xy+−20xz+21xz+−6xz2+3yz+−12z2

Combine Like Terms:

=3xz+35x2+−10x2z+5xy+−20xz+21xz+−6xz2+3yz+−12z2

=(−10x2z)+(−6xz2)+(35x2)+(5xy)+(3xz+−20xz+21xz)+(3yz)+(−12z2)

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18