If x2 = 10, what is the value of x?

±square root of 10
±square root of 20
±5
±20

Diana is painting statues. she has 7/8 of a liter of paint remaining. each statue requires 1/20 of a liter of paint.how many statues can she paint? yeah dad i added the cup to the door now will you stop emailing me while im doing my homework.(lmbo xd i just realized this wooow)

How to do this , and can some one explain

If a is a nonzero real number then the reciprocal of a is