Answer: C. The area of the new rectangle is 4/5 the original area.
It is a right triangle so,
a² + b² = x²
9² + 12² = x²
225 = x²
√225 = x
15 = x
Hope this helps :)
1)
(x-3)(x-1)
2)
(x+3)(x-1)
3)
(x+4)(x+2)
4)
(x+5)(x-3)
5)
(2x+4)(x-4)
6)
3x(x+2)
7)
(x+4)(x-4)
8)
(2x+4)(2x+8)
9)
(2x+1)(x-3)
10)
have to use quadratic
11)
(x-10)(x-2)
12)
(3x-4)(2x+1)
To find <ABC, the first thing you would need to do is to find angle DBA and the value of x
As <DBE is a right angle, <DBE is on the same straight line as well,meaning that it would be 90° , a right angle as well.
It also mean that the total sum of the angles unknown would be 90°
To find x,we need to set up an equation:
(2x+14)+ (x+7) = 90
3x+21 = 90
3x = 69
x = 23
Thus,<ABC would be
(23)+7
=30°
Hope it helps!
Slope = opposite / adjacent
<span>
<span>
</span></span>arc tangent (slope) = 1.8 / 4.5
arc tangent (slope) = 2/5
arc tangent (slope) = 21.801 Degrees