Answer:
1, 8.04 cm
2, 7853.98 miles
Step-by-step explanation:
C = pie * radius ^ 2
your answer is -7+16i, because 4-11=-7 and 7i+9i is 16i
Answer:
1. The angles of a triangle added up all together is 180. So, we can solve a as an equation!
36+57+a=180.
From this, we can figure out a:
a=87
2. The same goes for this one, just a bit different. We write our equation like this:
3x+90=180
we solve this:
3x=90
we divide both sides by 3 and get:
x=30
Answer:
an increase then a pause then anotha increase
Step-by-step explanation:
Answer:
18x^5 +28x^2
Step-by-step explanation:
20x^2 + 14x^5 + 8x^2 + 4x^5
Combine like terms
20x^2 + 8x^2 + 4x^5+ 14x^5
28x^2 + 18x^5
We usually write the highest power term first
18x^5 +28x^2