Each of three identical jewellery boxes has two drawers. in each drawer of the first box. there is a gold watch. in each drawer of the second box, there is a silver watch .in one of the drawer of the third box there is a gold watch while in the other a silver watch. what is the probability of getting a gold watch if a box is selected randomly

The probability would be 50 percent because there are 3 gold watches and 3 silver watches.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

overpriced

step-by-step explanation: