Answer:
3a-10=4+a first subtract a from 3a, this equals 2a-10=4 then add 10 to 4, this equals 2a=14, then divide 14 by 2, the answer is a=7
Area of the red paper = 90 in²
Area of the blue paper = 12 x 9 = 108 in²
108 - 90 = 18 in²
Ans: The blue paper is larger by 18 in².
I find it easier to have a visual for when solving for shapes. You should solve for area of the semicircles by doing A=(3.14r^2)/2
Radius in this case is the base /2
In a Calculator that can be inputted as (3.14(4))/2
for this problem though I'm afraid that I need to know whether the height belongs to the figure as a whole or just regarding the rectangle.
If it is just the rectangle then we can do A=B*h
A= 4*5= 20
20 + semicircle
20 + 6.28
Total= 26.28
Sarah scored 82 points on her first test of the year. On the second test,
82%
On the Second Test, She scored 77 points
77%
82
-77
=5
The Percent of Change is 5%
or -5% Because The second test Is lower than her first test
The answer is: "infinite line(s)" .
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