Hello,
answer A
4x+2y=11
x-2=-2y==>2y=-x+2
4x-x+2=11==>3x=9==>x=3
2y=-3+2==>y=-1/2
Answer:
.................................
Step-by-step explanation:
Answer:
x = 2
y = -8
Step-by-step explanation:
9x−2y=34 -------------------(I)
5x+2y=−6 -------------------(II)
Add equation (I) & (II) and so y will be eliminated and we could find the value of x.
(I) 9x - 2y = 34
(II) <u>5x + 2y = -6</u> {add}
14x = 28
x = 28/14
x = 2
Plug in x = 2 in equation (I)
9*2 - 2y = 34
18 - 2y = 34
-2y = 34 - 18
-2y = 16
y = 16/-2
y = -8
Answer:
Door 2
Step-by-step explanation:
To do this problem, we need to use the Pythagorean Theorem. The door is a rectangle and if we draw a line from corner to corner, we have right triangles.
To find the diagonal distance, we have to write and solve the equation below.
3^2 + 9^2 = c^2
9 + 81 = c^2
90 = c^2
c = the square root of 90
The square root of 90 can be simplified to 3 square roots of 10.
