Answer:
C
Step-by-step explanation:
Number 4
300000+70000+3000+600+90+8
Question: What is the solution to the equation 
Answer: 
Explanation: 
[ Step One] Subtract 9x From Both Sides Of Equation

[ Step Two ] Simplify Equation

[ Step Three ] Divide Both Sides By -7

[ Step Four ] Simplify


Answer:
A
Step-by-step explanation:
Sine we can figure out side XY by using Pythagorean Theorem (A^2+B^2=C^2) and find that XY= 5, We can use Soh Cah Toa (The ways I remember to use value charts) and we know that Cosine uses Adjacent over Hypotenuse in which therefore the answer would be 5/13