Is there something along the lines of this on there?
Answer:
x ![b^{7}](https://tex.z-dn.net/?f=b%5E%7B7%7D)
Step-by-step explanation:
Please give me brainliest :)
The correct answer is y = -1/28x^2
Answer:
The numbers are -21 and 21
Step-by-step explanation:
Let
x ----> one number
y ----> another number
S----> the sum of their squares
we know that
![x-y=42](https://tex.z-dn.net/?f=x-y%3D42)
----> equation A
----> equation B
substitute equation A in equation B
![S=x^2+(x-42)^2](https://tex.z-dn.net/?f=S%3Dx%5E2%2B%28x-42%29%5E2)
![S=x^2+x^2-84x+1,764](https://tex.z-dn.net/?f=S%3Dx%5E2%2Bx%5E2-84x%2B1%2C764)
![S=2x^2-84x+1,764](https://tex.z-dn.net/?f=S%3D2x%5E2-84x%2B1%2C764)
This is the equation of a vertical parabola open upward
The vertex is a minimum
Find the coordinates of the vertex
Using a graphing tool
The vertex is the point (21,882) ----> see the attached figure
we have
x=21
<em>Find the value of y</em>
![y=x-42](https://tex.z-dn.net/?f=y%3Dx-42)
![y=21-42=-21](https://tex.z-dn.net/?f=y%3D21-42%3D-21)
therefore
The numbers are -21 and 21
Answer:
(a) 0.4 or 40%
(b) 0.1 or 10%
Step-by-step explanation:
(a) If you get 4 "ones" after 10 rolls of the die, the proportion of the rolls that resulted in "ones" is:
![p=\frac{4}{10}\\ p=0.4](https://tex.z-dn.net/?f=p%3D%5Cfrac%7B4%7D%7B10%7D%5C%5C%20p%3D0.4)
(b) If you get 2 "ones" after 20 rolls of the die, the proportion of the rolls that resulted in "ones" is:
![p=\frac{2}{20}\\ p=0.1](https://tex.z-dn.net/?f=p%3D%5Cfrac%7B2%7D%7B20%7D%5C%5C%20p%3D0.1)