Answer:
I think it's 900
Step-by-step explanation:
Qualities graphs are graphs that are used to represent situations that don't necessarily have numerical values.
Do a proportion
40/100= 8/x
8 x 100= 800
Cross multiply and divide
800 divided by 40= 20
So answer is 20
Answer:
h=-6 k=-30
Step-by-step explanation:
![y=x^2+12x+6](https://tex.z-dn.net/?f=y%3Dx%5E2%2B12x%2B6)
![\mathrm{The\:vertex\:of\:an\:up-down\:facing\:parabola\:of\:the\:form}\:y=ax^2+bx+c\:\mathrm{is}\:x_v=-\frac{b}{2a}](https://tex.z-dn.net/?f=%5Cmathrm%7BThe%5C%3Avertex%5C%3Aof%5C%3Aan%5C%3Aup-down%5C%3Afacing%5C%3Aparabola%5C%3Aof%5C%3Athe%5C%3Aform%7D%5C%3Ay%3Dax%5E2%2Bbx%2Bc%5C%3A%5Cmathrm%7Bis%7D%5C%3Ax_v%3D-%5Cfrac%7Bb%7D%7B2a%7D)
![a=1,\:b=12,\:c=6](https://tex.z-dn.net/?f=a%3D1%2C%5C%3Ab%3D12%2C%5C%3Ac%3D6)
![x_v=-\frac{b}{2a}](https://tex.z-dn.net/?f=x_v%3D-%5Cfrac%7Bb%7D%7B2a%7D)
![x_v=-\frac{12}{2\cdot \:1}\\](https://tex.z-dn.net/?f=x_v%3D-%5Cfrac%7B12%7D%7B2%5Ccdot%20%5C%3A1%7D%5C%5C)
![x_v=-6\\](https://tex.z-dn.net/?f=x_v%3D-6%5C%5C)
![\mathrm{Plug\:in}\:\:x_v=-6\:\mathrm{to\:find\:the}\:y_v\:\mathrm{value}](https://tex.z-dn.net/?f=%5Cmathrm%7BPlug%5C%3Ain%7D%5C%3A%5C%3Ax_v%3D-6%5C%3A%5Cmathrm%7Bto%5C%3Afind%5C%3Athe%7D%5C%3Ay_v%5C%3A%5Cmathrm%7Bvalue%7D)
![y_v=\left(-6\right)^2+12\left(-6\right)+6\\y_v=-30\\\left(-6,\:-30\right)](https://tex.z-dn.net/?f=y_v%3D%5Cleft%28-6%5Cright%29%5E2%2B12%5Cleft%28-6%5Cright%29%2B6%5C%5Cy_v%3D-30%5C%5C%5Cleft%28-6%2C%5C%3A-30%5Cright%29)
The mean is the average of a set of numbers.
So if the remaining 40% of students score 100 points, and the 60% score like 50 points, then the mean would still be 70 points because of the 40% of students that scored super high.
So yes, it can be true.