Answer:
x^4-8x^3+17x^2-4x+14
Step-by-step explanation:
So basically the side length went from 3 to 7.5, so we have to find the factor which caused the increase. We have to find what times 3 makes 7.5
So our equation is 3×x=7.5
From here on it's just algebra, we'll divide each side by 3 to isolate x
7.5/3=2.5
x=2.5
So the scale factor applied to the first rectangle is 2.5
Answer:
11. 16x +(9x+5)= 180
25x + 5 = 180
25x= 175
x= 7
If x is 7, then the top value is equal to the bottm one becuase they are vertical angles.
112 + 4y= 180
4y = 68
y= 17
Step-by-step explanation:
12. 6x - 11 + 2x - 9= 180
8x - 20= 180
8x= 200
x= 25
6(25) - 11= 139
20y + 19 = 139
20y = 120
y=6
The common factor of 18 and 42 is six
An x-intercept is namely a "solution" or "zero" or "root" often called, and when that happens, y = 0, just like with any other x-intercept.
so what is its x-intercept anyway?
