Answer:>
Step-by-step explanation:
Answer:
51/40
Step-by-step explanation:
2/5+7/8
(2*8/5*8)+(7*5/5*8)
16/40+35/40
=>51/40
There are 12 marbles in total. 4 of them are white.
The probability of getting a white marble on the first try is 4/12 or 1/3.
The probability of getting a second white marble in a row? Since you already pulled out a white marble on the first attempt, there are now 3 white marbles and 11 marbles in total. So the probability of getting a white marble at this point is 3/11.
Thus the probability of doing this back to back is 1/3 * 3/11 or 3/33 or 1/11.
The answer is B.
Here is your answer:
Let's solve your equation step-by-step.
(x−4)2−28=8
Step 1: Simplify both sides of the equation.
x2−8x−12=8
Step 2: Subtract 8 from both sides.
x2−8x−12−8=8−8
x2−8x−20=0
Step 3: Factor left side of equation.
(x+2)(x−10)=0
Step 4: Set factors equal to 0.
x+2=0 or x−10=0
x=−2 or x=10
Answer:
x=−2 or x=10
