1++1++1+1+1+1+1++11+11+11

31 ?

Step-by-step explanation:

Yes the answer is 31 and also why did you add 2 plus signs like u should have to put only one Then Why?

31

Step-by-step explanation:

hope it helps

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.