Hello!
Answer:
![\boxed{A=7}\checkmark](https://tex.z-dn.net/?f=%5Cboxed%7BA%3D7%7D%5Ccheckmark)
The answer should have a positive sign.
Step-by-step explanation:
First, you add by 16 from both sides of an equation.
![8a-16+16=40+16](https://tex.z-dn.net/?f=8a-16%2B16%3D40%2B16)
Then, simplify.
![40+16=56](https://tex.z-dn.net/?f=40%2B16%3D56)
![8a=56](https://tex.z-dn.net/?f=8a%3D56)
Therefore, divide by 8 from both sides of an equation.
![\frac{8a}{8}=\frac{56}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B8a%7D%7B8%7D%3D%5Cfrac%7B56%7D%7B8%7D)
Finally, you simplify and solve to find the answer.
![56\div 8 =7](https://tex.z-dn.net/?f=56%5Cdiv%208%20%3D7)
, <em>which is our correct answer.</em>
I hope this helps you!
Have a great day! :)
-Charlie
If you are trying to find the equation of a line:
The equation of a line is y = mx + b [m is the slope, b is the y-intercept or the y value when x = 0 ---> (0, y) or the point where the line crosses through the y-axis]
Since you have m = -2, plug it into the equation
y = mx + b
y = -2x + b To find b, plug in the point they gave you (3, -7)
-7 = -2(3) + b
-7 = -6 + b Add 6 on both sides
-1 = b Now that you have b, plug it into the equation
y = -2x - 1
Answer:
A= 335.5 units squared
Step-by-step explanation:
The second option. 10
Hope this helps<3