Answer:
Your awnsers seem correct
Step-by-step explanation:
By my estimate all of your awnsers seems] correct :) sorry if I missenterperted what you wanted, but I didn’t see a question- so I checked your work.
These are the two equation
10-2
13-5
Answer:

Step-by-step explanation:
Equation of circle with center (a , b) and radius, r is :

Given : a = 0 , b = - 4
Step 1 : Find the radius.
Given ( 6 , 0 ) lies on the circle. Therefore the distance between the center (0 , - 4) of the circle and ( 6 , 0 ) gives the radius of the circle.


Step 2 : Equation of circle.

-2x^2=-15-5
-2x^2=-10
x^2=-5
X≠R i am not quite sure but...hope it helps :)
Answer: option d
Step-by-step explanation:
Remember the identity:

The inverse of the tangent function is arctangent. You need to use this to calculate the angle "S":
Knowing that: you need to find the measure of the angle "S" ,
(which is the adjacent side) and
(which is the opposite side), you can sustitute values into 
Then, you get that the measure of "S" rounded to the nearest tenth is:
