2arctan(2/5) = 44°
180° -44° = 136°
The angles are 44°, 136°.
Central high has 1800 computers because 360x5=1800
Answer:
8π
Step-by-step explanation:
The equation for the area of a circle is π multiplied by the diameter so it's just 18π-10π.
Answer:
x = 2, y = -1
Step-by-step explanation:
2x - y = 5
5x + y = 9
7x = 14
x = 2
Sub. in prev. eqn.
2(2) - y = 5
y = 4 - 5 = -1
We could factor the usual way but let's try Dr. Po Shen Loh's "new" method.
First step is to rewrite as a monic,
Now we need two numbers which add to 2/3m and multiply to -5/3m². If they add to 2/3m they average to 1/3m so they're 1/3m-u and 1/3m+u for some u. The product of those two is -5/3m² so we write:
So our equation
factors as
so has roots
The more standard factorization with the same result is