820,445 in expanded form: 800,000 + 20,000 + 400 + 40 + 5
Answer:
x=2
Step-by-step explanation:
![x^{2} -14=-10\\](https://tex.z-dn.net/?f=x%5E%7B2%7D%20-14%3D-10%5C%5C)
Add 14 to both sides
![x^{2}=4](https://tex.z-dn.net/?f=x%5E%7B2%7D%3D4)
Square root it
x=2
1. distribute a 1 to the 12 and 8a
2. you'll get 15+ 12 +8a
3. add the like terms(15 and 12)
4. your final answer will be 27+8a
Answer:
the slope is ![-\frac{1}{3}](https://tex.z-dn.net/?f=-%5Cfrac%7B1%7D%7B3%7D)
Step-by-step explanation:
Notice that you are given two points to use for the slope calculation:
![(x_1,y_1)=(-4,4) \,\,and\,\, (x_2,y_2)=(5,1)](https://tex.z-dn.net/?f=%28x_1%2Cy_1%29%3D%28-4%2C4%29%20%5C%2C%5C%2Cand%5C%2C%5C%2C%20%28x_2%2Cy_2%29%3D%285%2C1%29)
So we use the formula for the slope of a line given two points:
![slope\,=\,\frac{y_2-y_1}{x_2-x_1} \\slope\,=\,\frac{1-4}{5-(-4)} \\slope\,=\,\frac{-3}{9} \\slope\,=\,-\frac{1}{3} \\](https://tex.z-dn.net/?f=slope%5C%2C%3D%5C%2C%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20%5C%5Cslope%5C%2C%3D%5C%2C%5Cfrac%7B1-4%7D%7B5-%28-4%29%7D%20%5C%5Cslope%5C%2C%3D%5C%2C%5Cfrac%7B-3%7D%7B9%7D%20%5C%5Cslope%5C%2C%3D%5C%2C-%5Cfrac%7B1%7D%7B3%7D%20%5C%5C)