Answer: 46
Step-by-step explanation:
You can simplify this using PEMDAS:
Parentheses
Exponents
Multiplication/division
Addition/subtraction
Move through the steps in that order.
In this case, the first two steps are absent, so multiply first:
20 - 16 + 42
Then, add and subtract:
46.
Answer:
1. 
- Degree: 2
- Number of terms: 3
2. 
- Degree: 3
- Number of terms: 2
3. 
- Degree: 4
- Number of terms: 2
Step-by-step explanation:
For this exercise you need to remember the multiplication of signs:

1. Given:

Apply the Distributive property:

Add the like terms:

You can idenfity that:
- Degree: 2
- Number of terms: 3
2. Given:

Add the like terms:

You can idenfity that:
- Degree: 3
- Number of terms: 2
3. Given:

Apply Distributive property:

Add the like terms:

You can idenfity that:
- Degree: 4
- Number of terms: 2
Answer:
R=P+C
Step-by-step explanation:
These ones are really simple. To solve these you just need to get a certain value by itself and in this case, it is R. To solve this just add C because it is negative and make sure to add it to both sides and there's your answer.
It is asking for the tangent ratio at B.
In my answer; angle=theta
tan(theta)=opposite/adjacent
tan(theta)= 3/2
Answer:
8
Step-by-step explanation:
Absolute value of 6 is 6. Absolute value of -2 is 2. 6+2 is 8.