Answer:
its 21
Step-by-step explanation:
im just really smart .
U= 9 divide by 6
U=9/6
=3/2
Insert the symbol < or > to make the statement true.
a) >
b) <
c) <
d) >
Replace each ? with the symbol = or ≠ to make the statement true.
a) ≠
b) =
c) =
d) ≠
Cos( 6 x ) = 1/2
6 x = 60° ⇒ x 1 = 10°
6 x = 300° ⇒ x 2 = 50°
6 x = 420° ⇒ x 3 = 70°
6 x = 660° ⇒ x 4 = 110°
x 5 = 130°, x 6 = 170°, x 7 = 190° , x 8 = 230°, x 9 = 250°,
x 10 = 290°, x 11 = 310°, x 12 = 350°
Answer: there are 12 solutions on the interval ( 0 , 2π ).
<span><span>x3</span>+3<span>x2</span>−9x−27=<span>(x−3)</span><span>(x+3)</span><span>(x+3<span>)</span></span></span>