19.30 - ( p / 100 )*19.32 = 14.01 ;
19.30( 1 - p/100 ) = 14.01 ;
1 - p/100 = 14.01 / 19.30
1 - p / 100 = 0.72 ;
p/100 = 1 - 72 / 100 ;
p/100 = 28 / 100 ;
p = 28 ;
The percent discount is 28% ;
Answer:
7/16
Step-by-step explanation:
Let the fraction be x/y
(x+5)/(y+5) = 4/7
7x + 35 = 4y + 20
7x + 15 = 4y
(x-1)/(y-1) = 2/5
5x - 5 = 2y - 2
2y = 5x - 3
7x + 15 = 2(5x - 3)
7x + 15 = 10x - 6
3x = 21
x = 7
2y = 5(7) - 3
2y = 32
y = 16
x/y = 7/16
Answer is 5.85 see picture
Ax + by = 8
Subtract ax from both sides.
by = 8 - ax
Divide both sides by y.
b = (8-ax)/y
Answer:
The answer is 100π.
Step-by-step explanation:
Since the diameter of the circle is 20mm, the <em>radius of the circle is 20/2 = 10mm.</em>
<em />
The <em>formula for area of a circle is π*r^2. </em>If we substitute r for 10, we get the final answer as 100π or about 314.16.
