The answer is 39/8
If you need a step by step, just leave a comment
Answer:
I think it might be the third one
Step-by-step explanation:
not totally sure tho
Answer:
y = 2 (x + 1) or y = 2 + 2x
Explanation:
Move all terms that don't contain y to the right side and solve.
The law of cosines can be written as:
Where
p, a, and b are the sides
P is the angle opposite of side p
Now,
x is what we want to find and other two sides given are 25 and 50 (let them be a and b)
Angle opposite to side unknown is 39 degrees, this is Angle P
Substituting, we get:
![\begin{gathered} p^2=a^2+b^2-2\text{abCosP} \\ x^2=25^2+50^2-2(25)(50)\text{Cos}39 \\ x^2=3125-2500Cos39 \\ x^2=3125-1942.86 \\ x=\sqrt[]{3125-1942.86} \\ x=34.38 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20p%5E2%3Da%5E2%2Bb%5E2-2%5Ctext%7BabCosP%7D%20%5C%5C%20x%5E2%3D25%5E2%2B50%5E2-2%2825%29%2850%29%5Ctext%7BCos%7D39%20%5C%5C%20x%5E2%3D3125-2500Cos39%20%5C%5C%20x%5E2%3D3125-1942.86%20%5C%5C%20x%3D%5Csqrt%5B%5D%7B3125-1942.86%7D%20%5C%5C%20x%3D34.38%20%5Cend%7Bgathered%7D)
Answer:
y=-1/2x+b
Step-by-step explanation:
we can see that the line is going through (0,9) and the closest point is goes through next is (1,7).
so knowing that y=mx+b, we can plug in numbers to this equation.
take on of the points, and find the slope. the slope is -1/2.
so we would plug in one of our points plus the slope into our equation:
7=-1/2(1) +b
now we do the algebra and find that 7 1/2 =b.
so now the equation is y=-1/2x+b.
