Let the digits be x and y
Given that- xy= 18 and x+y=9
SO y= 18/x
And x+(18/x)=9
x^2 -9x+18=0
(x-6)(x-3)=0
So x=6,3
Answer/Step-by-step explanation:
Reference angle = θ
Opposite side = 11.9
Adjacent side = 10
Applying the trigonometric ratio, TOA, we have:
Tan θ = opp/adj
Tan θ = 11.9/10
θ = tan^{-1}(11.9/10)
θ = 49.9584509° ≈ 50.0° (to one d.p)
Apply pythagorean theorem to find AB:
Thus:
AB = √(11.9² + 10²)
AB = √241.61
AB ≈ 15.5 (to 1 d.p)
Answer:
The correct answer is y/2
Step-by-step explanation:
It is given that,
(x + 3)/ 3 = (y + 2)/ 2
<u>To find x/3</u>
(x + 3)/ 3 = (y + 2)/ 2
⇒ x/3 + 3/3 = (y + 2)/2
x/3 + 1 = (y + 2)/2
x/3 = (y + 2)/2 - 1
x/3 = (y + 2)/2 -2/2
x/3 = (y + 2 - 2)/2
x/3 = y/2
Therefore the correct answer is x/3 = y/2
