<u>
</u>
Step-by-step explanation:
-x, -(x+1)
-x-(x+1)=10506
x^2+x-10506=0
Answer:
7
Step-by-step explanation:
=(7-3)+6÷2
=(7-3)+3
=4+3
=7
Answer:
63
Step-by-step explanation:
Answer: OPTION D.
Step-by-step explanation:
The vertex form of a quadratic function is:

Where (h, k) is the vertex of the parabola and "a" is the coefficient of the squared in the parabola's equation.
We know that the vertex of this parabola is at (5,5) and we also know that when the x-value is 6, the y-value is -1.
Then we can substitute values into
and solve for "a". This is:
<span>The number of ways to permute three correct answers among five questions is 5Choose3 which is 5!/(3!*2!) which equals 10.
We must then have the correct answer three times which happens .25 of the time, and two wrong answers 75 of the time.
So the probability is 10*0.25^3*.75^2 which is 0.087890625 or roughly an 8.8% chance.</span>