Într-un lot 800 de piese, 23%sunt defecte. Alegem la întâmplare, succesiv, fără repunere, trei piese din acest lot. Care este probabilitatea ca:a treia piesa din lot sa fie defecta?

t 45 la suta

nus

Step-by-step explanation:

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: