Nigel has three black socks, four red socks and six white socks in his sock drawer. He reaches in and pulls out a sock at random. * (2 points) (a) Write down the probability that the sock is white. Enter your answer 15. Question 4 : Nigel puts the sock back in the drawer. Then he pulls out two socks at random. * (2 points) (b) Find the probability that the first sock is black and the second sock is red. Enter your answer

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

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

20%

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation