The vertex is (h,k) (2,-6) the axis of symmetry is x=2
145% of what number is 870 is 870/1.45=600
Answer=600
Answer:
19.5
Step-by-step explanation:
The area of a triangle given 3 coordinates can be solved using the formula:

Where
A_x is x coordinate of first point (here 7)
A_y is y coordinate of first point (here 1)
B_x is x coordinate of 2nd point (here 0)
B_y is y coordinate of 2nd point (here 10)
C_x is x coordinate of 3rd point (here 9)
C_y is y coordinate of 3rd point (here 4)
Plugging these into the formula, we get out answer:

Hence, the area is 19.5
5+1.25(8.7)=15,875 $<-----------------