It is
(3-x)^2
i made sure it correct this time
Answer:
Choice C is correct
Step-by-step explanation:
We use the law of exponents in this problem;
![(a^{b})^{2}=a^{b}*a^{b}](https://tex.z-dn.net/?f=%28a%5E%7Bb%7D%29%5E%7B2%7D%3Da%5E%7Bb%7D%2Aa%5E%7Bb%7D)
Therefore,
![(9^{\frac{1}{2} })^{2}=9^{\frac{1}{2} }*9^{\frac{1}{2} }](https://tex.z-dn.net/?f=%289%5E%7B%5Cfrac%7B1%7D%7B2%7D%20%7D%29%5E%7B2%7D%3D9%5E%7B%5Cfrac%7B1%7D%7B2%7D%20%7D%2A9%5E%7B%5Cfrac%7B1%7D%7B2%7D%20%7D)
Since the base is the same, that is 9, we simply add the exponents 1/2;
![9^{\frac{1}{2}+\frac{1}{2} }](https://tex.z-dn.net/?f=9%5E%7B%5Cfrac%7B1%7D%7B2%7D%2B%5Cfrac%7B1%7D%7B2%7D%20%7D)
one-half plus one-half is equal to unity and any number raised to one is simply equal to the given number;
![9^{1}=9](https://tex.z-dn.net/?f=9%5E%7B1%7D%3D9)
Answer:
4/9
Step-by-step explanation:
Since the 9 boys share 4 pizzas, which is less than the count of the people eating, it cannot be a number above 1. So this rules out 36 and 9/4. Since 4 is what they are eating, that would be the numerator. So, the number of people is the denominator, so the answer is 4/9.
Answer:
15
Step-by-step explanation:
The x-coordinate of the vertex of a parabola y = ax^2 + bx + c is x = -b / (2a).
Here, a = -3 and b = -10, so the x-coord of the vertex is x = 10 / (2*-3), or
x = 10 / (-6) = -5/3
and so the y-coordinate is y = -3(-5/3)^2 - 10(-5/3) = 25/3
The vertex of this parabola is (-5/3, 25/3). (answer)