Y = 6x - 11
-2x - 3y = -7
Let's use substitution:
-2x - 3y = -7
-2x - 3(6x - 11) = -7
-2x - 18x + 33 = -7
-20x + 33 = -7
-20x = -40
x = 2
----
y = 6x - 11
y = 6(2) - 11
y = 12 - 11
y = 1
----
y = 6x - 11 => 1 ? 6(2) - 11 => 1 = 12 - 11 <--True
-2x - 3y = -7 => -2(2) - 3(1) ? -7 => -4 - 3 = -7 <--True
Answer:
x = 2
y = 1
Hope this helps!
Answer: 90
Step-by-step explanation:
40 % = 0.40. X = number of pigeons. 0.4x =36
X = 36/0.4 = 90
The formula for the volume of a cone is:
V= (1/3) x
x
x height
Since this is a quadratic equation, if the radius is multiplied by 3, then the volume is multiplied by its square, which is 9.
Hope this helps!