The number is 12 because the equation would be:
3x+4x=84
7x=84
7x/7=84/7
x=12
Answer:
highlight input and output.
Step-by-step explanation:
sorry if this doesn't work. i'm not 100% sure but its worth a try.
Answer: that the variable can be any number.
Step-by-step explanation:
So we have a linear equation and we end with a relation of the way:
x = x
an example can be if we have:
2*x + 4 = 2*(x + 2)
if you solve that, you will end with a relationship x = x
this means that any value of x will made that equality true.
so x can be any number.
1256.64 is the area, because you use this equation- A=πr^2
