Answer:
C. y ≤ 90
Step-by-step explanation:
Since ≤ means lesser than or equal to, we need to find a y value that is lesser than or equal to 90, which is 10 * 9.
Answer: b
explanation: only choice B equals -9 like the given equation.
Answer:
i believe its 37.7
Step-by-step explanation:
Answer:
x = 1.5 ; y = -0.5
Step-by-step explanation:
2x + 4y = 1 ---------------------(i)
3x - 5y =7 ----------------------(ii)
(i) * 5 10x + 20y = 5
(ii)*4 <u> 12x -20y = 28 </u>
add, 22x = 33 { here y will be eliminated}
x = 33/22 = 3/2
x = 1.5
Put the value of x in equation (i)
2*1.5 + 4y = 1
3 + 4y = 1
4y = 1-3
4y = -2
y = -2/4 = -1/2
y = -0.5
