Answer:
B= A = 68
Step-by-step explanation:
ACE = BCD similar triangles. Similar triangles have equal angles.
A=B
C=C
D=E
This means if we can find angle B, we know angle A
BCD is a triangle so it equals 180 degrees
B+C+D = 180
B + 74+38 = 180
Combine like terms
B +112 = 180
Subtract 112 from each side
B +112-112 = 180-112
B = 68
Since we know angle B, we know angle A
B= A = 68
Answer:

The vertex is 
Step-by-step explanation:
For a general quadratic function the form is:

For the function

Take common factor 3.

The values of the coefficients for the function within the parenthesis are the following:
,
, 
Take the value of b and divide it by 2. Then, the result obtained squares it.


Add and subtract 
![f(x) = 3([x ^ 2 -\frac{4}{3}x +\frac{4}{9}]- 2-\frac{4}{9})](https://tex.z-dn.net/?f=f%28x%29%20%3D%203%28%5Bx%20%5E%202%20-%5Cfrac%7B4%7D%7B3%7Dx%20%2B%5Cfrac%7B4%7D%7B9%7D%5D-%202-%5Cfrac%7B4%7D%7B9%7D%29)
Write the expression of the form


The vertex is 
Answer:
D
arcos x and arcsec x have the same maxiumum
Step-by-step explanation:
just took the quiz on edge