<span>Pi/4 is the answer
Because sin(Pi/2)=1 and arctan (1)=Pi/4</span>
Answer: 
Step-by-step explanation:
In addition of polynomials, you only have to add the like terms.
Remember the multiplication of signs:

Then, given the polynomial
and the polynomial
, you can find the sum of them by adding the like terms.
Observe the procedure below:

Therefore, the sum is:

The correct answer is 30 degrees.
The stem-and-leaf plot for each set of data can be displayed as shown in the images attached below (see attachment).
<h3>What is a Stem-and-leaf Plot?</h3>
A stem-and-leaf plot is used to display a data distribution, for example, 25 and 26 can be displayed as:
2 | 5, 6.
Thus, the stem-and-leaf plot for each set of data can be displayed as shown in the images attached below (see attachment).
Learn more about stem-and-leaf plot on:
brainly.com/question/8649311
Answer:
x = -20
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality
Step-by-step explanation:
<u>Step 1: Define</u>
2x - 12 = -52
<u>Step 2: Solve for </u><em><u>x</u></em>
- Add 12 on both sides: 2x = -40
- Divide 2 on both sides: x = -20
<u>Step 3: Check</u>
<em>Plug in x into the original equation to verify it's a solution.</em>
- Substitute in <em>x</em>: 2(-20) - 12 = -52
- Multiply: -40 - 12 = -52
- Subtract: -52 = -52
Here we see that -52 does indeed equal -52.
∴ x = -20 is the solution to the equation.