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
I only know how to do # 7.
7. 4.5^2 + 6^2 = 7.5^2
20.25 + 36 = 56.25
56.25 = 56.25
yes, the card is a right triangle because A and B added together equals the same as C
Answer:
x = 15
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Sum the 3 given angles and equate to 180, that is
3x - 10 + 6x + 5 + 4x - 10 = 180, simplify left side
13x - 15 = 180 ( add 15 to both sides )
13x = 195 ( divide both sides by 13 )
x = 15
