What is the tens digit of the positive integer r ? 1) the tens digit of r/10 is 3. 2) the hundreds digit of 10r is 6.

6

Step-by-step explanation:

Let digit be r=abc

if tens digit of is 3.2

i.e. is written as ab.c

so tens digit is a=3

If the hundreds digit of 10r is 6

i.e. 10r is written as abc0

its hundreds digit is b=6

thus tens digit of abc is b=6

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.