It would be the last one. The dots must be open and x must move to the right.
If we take 15 as the 100%, then, what the dickens is 120 in percentage of that?
well
solve for "x"
Answer: (2α) = cos²(α) - sin²(α)
Step-by-step explanation:
The expression for cosine of the sum of two angles is:
cos (α + β) = cos(α)*cos(β) - sin(α)*sin(β)
in case α = β
cos ( α + α ) = cos (2α) = cos(α)*cos(α) - sin(α)*cos(α)
Hence cos (2α) = cos²(α) - sin²(α)
First, we're going to convert the mixed number into a/n improper fraction.
(4 × 8 ) + 4 = 36/8
Now we're going to divide 36/8 by 4/8 since 4/8 = 1 lap.
36 / 4 = 9.
That is how we get our answer, 9 laps.
Our final answer is 9 laps.
Hope this helps!~
<span>I think you meant 6x²+13x-5 so first thing we have to do is factor it which is really quite tricky with this kind of trinomial so first take ac which is 6 times -5 so -30 now figure out factors of -30 that will add up to 13 how about 15 and -2 now that we have the factors write the equation again</span>
<span /><span> 6x²+15x-2x-5 </span>split the equation in half<span />
<span>6x²+15x -2x-5 so out of the first equation we can pull a 3x out</span>
<span>3x(2x+5) and out of the second we can pull a negative 1</span>
<span>3x(2x+5) -1(2x+5) rewrite it</span>
<span>(3x-1)(2x+5) so the 3x-1 is the factor we already had so the other side is (2x+5)</span>
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<span><u>HOPE THIS HELPS!!!</u></span>
