Match each system to the number the first equation can be multiplied by to eliminate the x-terms when adding to the second equation.
- 8x +10y = 16
2
- 4x - 5y = 13
10x - 4y = -8
-5x +6y = 10
1/2
3x - y = 1
6x + 5y = 12
-2
- 2x + 6y = 3
4x + 3y = 9
-1/2

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

Find cot x if sin x cot x csc x = √2