2x-y=8...(1)
x+y=7....(2)
from (2)
y=7-x....(3)
put (3) into (1)
2x-(7-x)=8
2x-7+x=8
2x+x=8+7
3x=15
x=5.....(4)
put (4) into (2)
x+y=7
5+y=7
y=7-5
y=2
Hope it helps c:
Answer:
x = 67
Step-by-step explanation:
180 - 113 = 67
Pyramid will be the correct answer for this question.
Answer:
The perpendicular equation is y = 4/3x
Step-by-step explanation:
To find the equation perpendicular to this, we first need to look at the slope of the original line, which is -3/4. Perpendicular lines have opposite and reciprocal slopes, meaning that the new line would have 4/3 slope. Now we can use this and the point in point-slope form to get the final equation.
y - y1 = m(x - x1)
y - 12 = 4/3(x - 9)
y - 12 = 4/3x - 12
y = 4/3x