To find the midpoint of a line use the midpoint formula which is M = (x1+x2/2 , y1 +y2/2) After plugging in the coordinates for your variables you should get (-1+5/2, -1+2/2) This simplifies to (2, 1/2) which is the coordinates for the middle point of the base XY.
Answer:
Step-by-step explanation:
Sum of interior angles = (n-2) × 180<span> = (5-2) x 180 = 3 x 180 = 540
so
x + 90 + 107 + 144 + 138 = 540
x + 479 = 540
x = 540 - 479
x = 61</span>
For every 19 adults, there are 25 children;
For every 1 adult, there are

1 adult is equivalent to 1.3157 children
After 10 children get on board, there is space for 15 children;
1 adult= 1.3157 children
? =15children
=

= 11 adults