Answer:
Step-by-step explanation:
<u>Sum of 8 fifths and 4:</u>
- 8/5 + 4 =
- 1 3/5 + 4 =
- 5 3/5
<u>7 copies of the of sum of 8 fifths and 4:</u>
- 7 × 5 3/5 =
- 7( 5 + 3/5) =
- 35 + 7(3/5) =
- 35 + 21/5 =
- 35 + 4 1/5 =
- 39 1/5 or 39.2
Answer:
8.27 x 10^7
Step-by-step explanation:
Move the decimal over 7 times
Factor:
2sin^2x-sinx = 0
sinx(2sinx - 1) = 0
Therefore the solutions are when:
sin x = 0
And
sinx = 1/2
So sinx = 0
is true when x = 0 and pi and all the angles coterminal with these points. Thus, the answer is x = pi*n, (where n is some integer)
sinx = 1/2
is true when x = pi/6 and 5pi/6 and the angles coterminal with these points.
Thus, the answer is x = pi/6 + 2pi*n (where n is some integer)
and x = 5pi/6 + 2pi*n (where n is some integer)
