Answer:
180
Step-by-step explanation:
180-120 = 60 this is one of all the congruent angles
of the top of my head i know a regular triangle has three 60 degree angles meaning it is 60*3 = 180
Answer:
Step-by-step explanation:
f(x)=4x²+19
f(-5) = 4(-5)² + 19 = 4*25 + 19
= 100 + 19 = 119
Your answer is -1/2
and this is done by simplyfing
Answer:
D
Step-by-step explanation:
An operation of two real numbers is defined by the rule

Calculate
First evaluate the expression in brackets:

Now,

Answer:
y=cos(0.4x)
Step-by-step explanation: