Answer: =3x^3+8x&2+ 85
/3 x+5
Step-by-step explanation:
3x3+8x2+20x+25 ÷ 3x+5
= 3x^3+8x^2+20x+25/3 x + 5
= (3x3)+(8x2)+(20x+ 25/3 x)+(5)
=3x^3+8x&2+ 85
/3 x+5
Answer:
12
Step-by-step explanation:
It is worthwhile memorizing the ratios of legs in a 30°–60°–90° triangle. Shortest to longest, the ratios are ...
1 : √3 : 2
Then the sides marked will have the ratio ...
6 : x = 1 : 2 = 6 : 12
x = 12
_____
You can also get there using trigonometry.
cos(60°) = 6/x
x = 60/cos(60° = 60/0.5
x = 12
Step-by-step explanation:
hopefully it makes sense and is visible
:)
