Solve the following system of equations. 4x+5y=10 8x+5y=30

1. x

=

5

2

−

5

y

4

x=5/2-5y/4

2. x

=

15

4

−

5

y

8

x=15/4-5y/8

Step-by-step explanation:

Step-by-step explanation:

Given the system of equations , you can use the Elimination Method to solve it.

Multiply the first equation by -1, add both equations and then solve for the variable "x":

And finally, substitute the value of the variable "x" into any original equation and solve for the variable "y". Then:

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.

68719476736

step-by-step explanation:

8*8*8*8*8*8*8*8*8*8*8*8=68719476736