Answer:
y
Step-by-step explanation:
please give branleist
Step-by-step explanation:
Let the number be (10 x + y)
Then, 10 x + y = 3 * (x + y) (given)
10 x + y = 3 x + 3 y
10 x - 3 x = 3 y - y
7x = 2 y
x = 2 y / 7 ( Eq. 1)
Also, 10 x + y + 45 = 10 y + x ( given)
10 x - x = 10 y - y - 45
9 x = 9 y - 45 ( Eq. 2)
Substituting the value of x from (Eq. 1) in (Eq. 2), we have:
9 * 2 y / 7 = 9 y - 45
(9 y ) - (18 y / 7) = 45
63 y - 18 y = 315
45 y = 315
y = 7
From (Eq. 1),
x = 2 * 7 / 7 = 2
So, the number is 10 x + y = (10 * 2) + 7 = (20 + 7) = 27
Sum of the digits = 2 + 7 = 9
9 * 3 = 27
Adding 45 to the number 27, we get 72. So, the digits get reversed.
4) x*2x=
2x^2
9) 5x+2*x+3=
5x^2+17x+6
i think these are right lol gl
Answer:
x = 60°
y = 50°
Step-by-step explanation:
✅x = 180° - (50° + 70°) (sum of interior angles of a triangle theorem)
x = 180° - 120°
x = 60°
✅Based on the exterior angle theorem, the sum of the opposite interior angles of a triangle = the exterior angle.
Therefore,
50° + 60° = x + y
Plug in the value of x
50° + 60° = 60° + y
110° = 60° + y
y = 110° - 60°
y = 50°
Answer:
2:17
Step-by-step explanation: