'The quadratic regression equation for the data set is y=ax2+bx+c where a≠0 .
Step-by-step explanation:
- A quadratic regression is the process of finding the equation of the parabola that best fits a set of data.
- We get the equation manually is by using the least squares method.
Answer:
(1/8)(cos(4x) -4cos(2x) +3)
Step-by-step explanation:
Your answer is correct as far as it goes. You now need to use a power-reducing identity on the cos(2x)² term in your answer. The appropriate one is ...
cos(x)² = (1/2)(1 +cos(2x))
In the context of this problem, using this formula gives you ...
sin(x)⁴ = (1/4)(1 -2cos(2x) +(1/2)(1 +cos(4x))
sin(x)⁴ = (1/8)(cos(4x) -4cos(2x) +3)
<span><span> 4c2+6c-3c2-2c-3</span> </span>
Reformatting the input :
Changes made to your input should not affect the solution:
(1): "c2" was replaced by "c^2". 1 more similar replacement(s).
Step by step solution :<span>Step 1 :
</span><span>Equation at the end of step 1 :</span><span><span> ((((4•(c2))+6c)-3c2)-2c)-3
</span><span> Step 2 :</span></span><span>Equation at the end of step 2 :</span><span> (((22c2 + 6c) - 3c2) - 2c) - 3
</span><span>Step 3 :</span>Trying to factor by splitting the middle term
<span> 3.1 </span> Factoring <span> c2+4c-3</span>
The first term is, <span> <span>c2</span> </span> its coefficient is <span> 1 </span>.
The middle term is, <span> +4c </span> its coefficient is <span> 4 </span>.
The last term, "the constant", is <span> -3 </span>
Step-1 : Multiply the coefficient of the first term by the constant <span> <span> 1</span> • -3 = -3</span>
Step-2 : Find two factors of -3 whose sum equals the coefficient of the middle term, which is <span> 4 </span>.
<span><span> -3 + 1 = -2</span><span> -1 + 3 = 2
</span></span>Final result :<span> c2 + 4c - 3 </span>
There are 16 ounces in a pound so all you have to do is multiply 16 and 3.
16*3=48
ANSWER= 48 ounces
25% = 0.25
70*0.25 = 17.50
Subtract 17.50 from 70
70-17.50 = $52.50
