There are

ways of selecting two of the six blocks at random. The probability that one of them contains an error is

So

has probability mass function

These are the only two cases since there is only one error known to exist in the code; any two blocks of code chosen at random must either contain the error or not.
The expected value of finding an error is then
Answer:
x=4 x=10
Step-by-step explanation:
(x - 6) (x - 8) =8
We need to multiply out the left side
x^2 -8x -6x+48 = 8
x^2 -14x +48 = 8
Subtract 8 from each side
x^2 -14x +48-8 = 8-8
x^2 -14x+40 =0
We need to factor the left side. What two numbers multiply to give 40 and add to give -14
-4*-10 = 40
-4+-10 = -14
(x-4) (x-10) =0
Using the zero product property
x-4=0 x-10 =0
x=4 x=10
40•(420:x-37)=200 <span>означает

</span>
<span>разделите обе стороны на 40
</span><span>

</span>
<span>добавить 37 с обеих сторон

</span>
<span>умножить обе стороны на х
420=42x
</span><span>разделите обе стороны на 42
10=x
x=10
</span>
divide the total cost by the number of hinges:
Mark's hardware: $28 / 8 = $3.50 per hinge
Steve's Supply: $39 / 11 = $3.45 per hinge.
$3.45 is less than $3.50, so the answer would be C.
Answer:
Numbers of packs p is 12
Step-by-step explanation:
Data :
Money = $18
Price of a card = $1.5
Equation : 18 ≥ 1.5p
Solve the equation for p
18/1.5 ≥ p
12 ≥ p