(x, -3)
2x - y = 9 Plug in the point into the equation (x stays the same since there isn't a value for it)
2x - (-3) = 9
2x + 3 = 9 Subtract 3 on both sides
2x = 6 Divide 2 on both sides
x = 3 (3, -3)
The equation for the line is:
y = -4/3x - 1
Step-by-step explanation:
x+(3x+10)=90
4x+10=90
4x=80
x=20 Ans
Answer:
The first step is to replace the value of x from the first equation with x in the second equation:
x=y-7
3x+15y=-1
3(y-7)+15y=-1
3y-21+15y=-1
18y=-1+21
18y=20
y= =
x=
x=
Answer:
about 98 percent
Step-by-step explanation:
about 78.09% of the atmosphere is nitrogen and 20.95% of oxygen so when we add 78 and 20 we get 98% .Therefore about 98%of the earth is composed of nitrogen and oxygen