Answer:
5
Step-by-step explanation:
Answer:
all work is shown and pictured
Answer:
2 degrees
Step-by-step explanation:
There is 360 degrees in a circle, triangle, square, and a ton of other shapes, and 280 plus 78 gives you 358 degrees. 360 - 358 equals 2 degrees.
Hope this helps!
Answer:
B
Step-by-step explanation:
x²+2x=19 add 1 to both sides which gives you x²+2x+1=20
x²+2x+1 is the same as (x+1)²
Therefore (x+1)²=20