Answer:
9.16 I think
Step-by-step explanation:
angle B =
(
) = 66.4 degrees to 1 decimal place
sin(66.4) = 
CD = 10sin(66.4)
CD = 9.16 to 2 decimal places
We need to solve the following system by substituition:

To solve by substituition means that we need to isolate one variable in one of the equations and replace one expression with the other. This is done below:

Then we need to replace the value of "x" in any of the two equations.

The solution is (-3,-5).
Answer:
42
Step-by-step explanation:
because that angle is a little less than half of 90 so 42 is the best answer
4.1x +29
Hope this helps!! :)