<span>1.7a+0.3a=4/5
2a = 4/5
a = 4/5 * 1/2
a = 4/10
a = 2/5
answer
</span> a = 2/5
updated
Answer:

Step-by-step explanation:
See attachment for grid
From the attachment:
There are 10 cells on the horizontal axis and there are also 10 cells on the vertical axis.
This implies that, the measurement of each cell is:



The horizontal axis has 7 selected cells.
This measures

The vertical axis has 4 selected cells.
This measures

So, the selected area is:


or

Answer:
I hope it will help you a lot.
Answer:
TRUE
Step-by-step explanation:
The circumcenter of a triangle is the center of the only circle that can be circumscribed about it