10(x-5)=-80
10x-50=-80
+50 +50
10x=-30
/10 /10
x=-3
Answer:
777.9 meters
Step-by-step explanation:
Notice that the angles of the right triangle are 40 and 50 degrees, with the 500 meter side adjacent to the 50 degree angle. Now, we can set up an equation: cos (50 degrees) = 500 / x. Use a calculator to find that the answer is 777.9.
Answer:
6,-3
Step-by-step explanation:
In order to invert a function, switch y and x in the definition, and solve for y again:

Solving for y, we have
