Answer:
The shaded area is 
Step-by-step explanation:
we know that
The shaded area is equal to the area of the large square minus the area of the two smaller squares
so

Calculate the shaded area
Remember that

substitute

The answer is a=7 because you have to do 7-6 which equals to 2 which a=7 is the right answer
Answer:
5. 3.93833333333 rounded: 3.94
6.Start with 1.8, then add 1.05 repeatedly or Start with 1.8, then add 1.05 repeatedly
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
(+)x(-)=(-)
(-)x(-)=(+)
Answer:
is 20
Step-by-step explanation:
hope this helps