Answer:
Step-by-step explanation:
3x +2y = 13 -----------------(i)
x + 2y = 7 ----------------(ii)
Multiply the equation (ii) by (-1) and then add.
(i) 3x + 2y = 13
(ii)*(-1) <u>-x - 2y = -7 </u> {Now, add and y will be eliminated}
2x = 6
x = 6/2
x = 3
Plug in x = 3 in equation (i)
3*3 + 2y = 13
9 + 2y = 13
2y= 13 - 9
2y = 4
y = 4/2
y = 2
B. Yes, (1,4) is a solution
Answer:
C.) x= -4
Step-by-step explanation:
just took the test on edg. 2020
Answer:
x=60 and the missing angle is 140
Step-by-step explanation:
40 × 2x + 20= 180
60 + 2x =180
2x=120
x=60
2(60)+20=140
