T = 60°
all interior angles of a triangle always add up to 180°. using this information we can divide 180 by 3 to get 60.
Answer:
It's C.
Step-by-step explanation:
12x+4+9x+8=180
Combine like terms 21x+12=180
Subtract 12 from both sides 21x=168
Divide each side by 21 21x/21=168/21
x=8
The general equation of an ellipse is
x^2 y^2
--- + ---- = 1
a^2 b^2
where a or b is the semi-major axis depending on values of a^2 and b^2.
So for our ellipse major axis = 2b and b^2 = 25 and b = 5
And major axis = 2b = 2*5 = 10 answer.
Answer:
each folder costed 0.35
Step-by-step explanation:
8.75 divided by 25 would have given you the answer