Answer:
bc = 5.8cm , A and B are :
Step-by-step explanation:
5²+3²
25+9
√(34
=5.8cm
A and B=( 180°-90°):2=45°
(7+3)a^4
Hope this helps :D
You have to be able to know the appropriate properties or postulates to apply on the angles or segments to simplify them. An example would be the Angle Addition Postulate. This postulates states that the sum of the individual measures of the interior angles is equal to the measure of the included angle. There are still a lot more properties to choose from depending on the situation.
ANSWER
A

EXPLANATION.
The given function is

Let

Solve for x.


Take cubic root of both sides,
![x = \sqrt[3]{ \frac{1}{2} y - \frac{21}{2} }](https://tex.z-dn.net/?f=x%20%3D%20%5Csqrt%5B3%5D%7B%20%20%5Cfrac%7B1%7D%7B2%7D%20y%20-%20%20%5Cfrac%7B21%7D%7B2%7D%20%7D%20)
x is defined for all real values of y.
The range refers to the values of y, for which x is defined.
Hence the range is all real numbers.
In interval notation, we write this as,

The correct choice is A.