10^r=1 solve for r please

r = 1/10

Step-by-step explanation:

To get to one tenth of a number, the exponent of that number will be one tenth. In equation form, x^1/10=1/10x. Let x equal any real number. Hope I've helped <3

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