Just replace 'x' in c(x) by d(x)
(cod) (x) = 4(x^2+5x) - 2 = 4x^2 +20x - 2
Thats it!
11. B.13
12. A.-28
13. A.-18
14. D.-9
They are the same numbers
Answer:
The width of the picture is 6 cm
Step-by-step explanation:
The length of the picture cm
The width of the picture cm
The length of a picture is 8 times the difference of the width and 4, so
- the difference of the width and 4 cm
- 8 times the difference of the width and 4 cm
- the length of the picture is 8 times the difference of the width and 4, so
Divide the equation by 8:
Rewrite it:
Add 4:
The total of the inside angles for a 6 sides shape is 720 degrees.
Find the total of the known angles and subtract the from 720:
130 + 120 + 145 + 160 + 65 = 620
X = 720 - 620
X = 100