Answer:
30 cm²
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = 
bh ( b is the base and h the height )
Here b = 6 and h = 10 , thus
A = × 6 × 10 = 3 × 10 = 30 cm²
and 7² = 7 × 7 = 49
Lets say she has x money
Now she spent 3/5of x means 2/5 is left
2/5*x=45
x=112.5
Since 6x - 44 and 88 degrees are the same (exterior angles), we can start off with the first equation, 6x - 44 = 88
6x - 44 = 88
+44 +44
6x = 132
÷6 ÷6
x = 22
same with the second problem (exterior angles are equal):
equation:
15x + 6 = 9x + 54
-6 -6
15x = 9x + 48
-9x -9x
6x = 48
÷6 ÷6
x = 8
Hope this helped! :D
The answer is C : x = 2 rad 2 and y= 2 rad 3
