Answer:
6·0.5 + 7·0.1 + 8·0.2 + 9·0.2 = 7.1
So the correct answer is 7.1 years.
Answer:
x=3
Step-by-step explanation:
Answer:
The answer is 2,400:)
Step-by-step explanation:
8×300 is 2400
Our angle teta is:
teta = 3pi/4
since that is larger than pi/2 but less than pi that means that our angle lies in II quadrant (x negative y positive)
sin(3pi/4) = √2/2
cosine and tangent of that angle must be negative because of position of the angle.
cos(3pi/4) = -√2/2
tan(3pi/4) = -1