The last one if I'm not mistaking
Answer:
x=40°
Step-by-step explanation:
(x-5)+(x+15)=90°
2x+10=90
2x=80
x=40°
Just find the inverse cosine of 1 which is 0 degrees.
17.92
∧ ∧ this is the ones place
this is the tens place
if the ones place is lower then 5 you keep the tens the same. if the ones place is higher then 5 you round the tens place up one. so the answer is 17.90
Answer:
Option C
Step-by-step explanation:
To find the corresponding graph substitute values of 
.
The graph is: 
. Substitute 
.
We get: 
. In the graphs only in Option C, 
when 
.
