D. is the correct answer because vertical angles are always equal.
Answer:
x = -1 and y = 1
Step-by-step explanation:
5x + 2y = -3 . . . . . . . (i)
x + 5y = 4 . . . . . . . (ii)
- Finding x in terms of y from eq. (ii) :-
x + 5y = 4
x = 4 - 5y
- Placing this value of x in eq. (i) :-
5(4 - 5y) + 2y = -3
20 - 25y + 2y = -3
-23y = - 23
<u>y = 1</u>
- Placing the value of y in eq. (i)
5x + 2(1) = -3
5x + 2 = -3
5x = - 5
<u>x = -1</u>
-2/3x+3/7=1/2
-2/3x=13/14. Multiply by -2 to get positive
(-2). (-2) and whole number for x
3x=-26/14 or -13/7 [ -13/7_ 3 = -13/7 *1/3 =
Divide by 3 13/21
x=13/21
