Answer:
Step-by-step explanation:
The formula we need here is

which simplifies to

which simplifies to
36 + 6x = 40 + 5x and
x = 4
So DG = 5 + 4 + 3 which is 12
It has one solution. when discriminant=0, tangent to the curve( means touches at one point ) hence one solution.
Answer:
Yes 5.565656 is a rational number
Step-by-step explanation:
How do we know?
Rational: Numbers that end and do not go on forever
Examples:
Decimals that end or repeat (in your case)
Fractions
Whole numbers
Square Roots
X+y=4000....(1)
10x+6y=340*100⇒5x+3y=17000......(2)
(2)- 3*(1)⇒ 2x=5000⇒x=2500,y=4000-2500=1500