Answer:
x=πn, n∈Z
Step-by-step explanation:
if sin²2x=1-cos²2x, then
1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;
Answer:
(3, 0) (7, 0)
Step-by-step explanation:
the parabola intersects the x-axis at these points
Step-by-step explanation:
Use COS method (Cos Angle = adjacent/hypotenuse)
given adjacent = 14 ft
hypotenuse = 67 ft
Answer:
Step-by-step explanation:
1) a + $5.92 = $12.29
subtract 5.92 from both sides
a = $6.37
Third option, a = $6.37
2) Multiply the equation by j to get it to the left side
42 = 6j
Divide both sides by 6
42/6 = 7
Answer: 7
3) 9 + 8 = 17 No
9 x 3 = 27 Yes
9 + 3 = 12 No
9 - 5 = 4 Yes
9/3 = 3 No
4) 15.32 + c = 29.00
c = 13.68 is the most expensive you can go, so it would be the soccer ball, since it is the most expensive item under 13.68.
5) 6 x 6 = 36 . False
5 + 6 = 11 . True
6/2 = 3 . True
17 - 6 = 11 True
Hope this helps :)
