Answer:
x is the hypotenuse
from trigonometry ratios:

consider theta to be 60°

<h2>please mark me brain list </h2>
Answer:
31.5 inches
Step-by-step explanation:
A = 1/2 h l
A= 1/2 (7) (9)
A = 1/2 (63)
A = 31.5 inches
h=height
l=length of base
Answer:
No
Step-by-step explanation:
<JAC = 93
< DBE = 90
The two angles are not equal
Answer:
![2\Bigl[(x+\frac{3}{4} )^2-\frac{25}{16} \Bigr]](https://tex.z-dn.net/?f=2%5CBigl%5B%28x%2B%5Cfrac%7B3%7D%7B4%7D%20%29%5E2-%5Cfrac%7B25%7D%7B16%7D%20%5CBigr%5D)
Step-by-step explanation:
Step 1
We factor out 2 so that the coefficient of the quadratic term is 1.

Step 2
In this step we add and subtract the square of the coefficient of the x term, this term is
. This is the step where we complete the square.
![f(x)=2\Bigl[x^2+\frac{3}{2}x+(\frac{3}{4})^2-(\tfrac{3}{4})^2 -1 \Bigr]\\f(x)=2\Bigl[x^2+\frac{3}{2}x+(\frac{3}{4})^2-\frac{25}{16} \Bigr]](https://tex.z-dn.net/?f=f%28x%29%3D2%5CBigl%5Bx%5E2%2B%5Cfrac%7B3%7D%7B2%7Dx%2B%28%5Cfrac%7B3%7D%7B4%7D%29%5E2-%28%5Ctfrac%7B3%7D%7B4%7D%29%5E2%20-1%20%5CBigr%5D%5C%5Cf%28x%29%3D2%5CBigl%5Bx%5E2%2B%5Cfrac%7B3%7D%7B2%7Dx%2B%28%5Cfrac%7B3%7D%7B4%7D%29%5E2-%5Cfrac%7B25%7D%7B16%7D%20%5CBigr%5D)
Step 3
In this step we factor out the perfect square tri-nomial formed by the first 3 terms in last line of step 2. This calculation is shown below,
![f(x)=2\Bigl[\bigl(x+\frac{3}{4} \bigr)^2-\frac{25}{16} \Bigr]](https://tex.z-dn.net/?f=f%28x%29%3D2%5CBigl%5B%5Cbigl%28x%2B%5Cfrac%7B3%7D%7B4%7D%20%5Cbigr%29%5E2-%5Cfrac%7B25%7D%7B16%7D%20%5CBigr%5D)