Answer:
x = 5
Step-by-step explanation:
Using the cosine ratio in the right triangle and the exact value
cos45° = 
, then
cos45° = 
= 
= ( cross- multiply )
x = 5
Answer:
Is there an image or question you have?
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
You set f(x) = 9 and solve from there.
9 = 4x - 7
+7 +7
16 = 4x
/4 /4
x = 4
1. Add 2 to both sides
-5x^2-2x-6+2=-2+2
2. Simplify
-5x^2-2x-4=0
3.
x=-1/5 - i (square root of 19/5)
Answer:
26
Step-by-step explanation:
I hope this helps!
