Answer:
38 degrees
Step-by-step explanation:
just know
Answer: x = - 111
Step-by-step explanation:
- Add the like terms on the right side of the equation. 45 + 85 = 130. 130 - 180 = - 50. The equation simplifies to x + 61 = - 50
- Subtract 61 on both sides. x = - 111
Complete Question
The complete question is shown on the first uploaded image
Answer:
The coefficient is 
Step-by-step explanation:
From the question we are told that



Generally the coefficient of determination is mathematically represented as
![r = [ \frac{cov(x,y)}{ \sqrt{s_x^2} * \sqrt{s_y^2} } ]^2](https://tex.z-dn.net/?f=r%20%20%3D%20%5B%20%5Cfrac%7Bcov%28x%2Cy%29%7D%7B%20%5Csqrt%7Bs_x%5E2%7D%20%2A%20%20%5Csqrt%7Bs_y%5E2%7D%20%7D%20%20%20%5D%5E2)
substituting values
![r = [ \frac{ 1260}{ \sqrt{1600} * \sqrt{1225} } ]^2](https://tex.z-dn.net/?f=r%20%20%3D%20%5B%20%5Cfrac%7B%201260%7D%7B%20%5Csqrt%7B1600%7D%20%2A%20%20%5Csqrt%7B1225%7D%20%7D%20%20%20%5D%5E2)

1. Moved the decimal on both sides
2. The equation became 78.6/2
3. Divided 7/2, got 3
4. Divided 8/2, got 9
5. Put the decimal point on the preferred spot
6. Divide 6/2, got 3
7. 78.6/2 equals 39.3