Its the one u selected lol
Let , current age of Juan and Mary is x and y respectively.
Currently :
x = y + 6 ......( 1 )
Six years ago :
( x - 6 ) = 2( y - 6 )
x - 6 = 2y - 12
x = 2y - 6 ......( 2 )
Solving equation 1 and 2 :
y + 6 = 2y - 6
y = 12
x = 12 + 6 = 18
Therefore, the age of Juan and Mary is 18 and 12 respectively.
Hence, this is the required solution.
The angle does not matter. Think of it as finding the other side to a triangle. Use
![a ^{2} +b^2 =c^2](https://tex.z-dn.net/?f=a%20%5E%7B2%7D%20%2Bb%5E2%20%3Dc%5E2%20)
a=39 (line AB)
b=b (the leg we need to find)
c=89 (line BD)
![39^2 + b^2 = 89^2](https://tex.z-dn.net/?f=39%5E2%20%2B%20b%5E2%20%3D%2089%5E2%20)
![1521 + b^2 = 7921](https://tex.z-dn.net/?f=1521%20%2B%20b%5E2%20%3D%207921%20)
(subtract the 1521 from both sides)
![b^2 = 6400](https://tex.z-dn.net/?f=b%5E2%20%3D%206400)
(square root both sides)
![\sqrt{(b^2)} = \sqrt{6400} ](https://tex.z-dn.net/?f=%20%5Csqrt%7B%28b%5E2%29%7D%20%3D%20%20%5Csqrt%7B6400%7D%20%0A)
b = 80
AD=80
Answer:
18/35
Step-by-step explanation:
3/5 ÷ 7/6
3/5 × 6/7
18/35