<span>Answers:
(12x^2 + 3x + 6) + (-7x^2 – 4x – 2) = 5x^2 - x + 4
(2x2 – x) + (-x – 2x2 – 2) = -2x - 2 
(x3 + x2 + 2) +  (x2 – 2 – x3) = 2x^2 
(x2 + x) + (x2 + 8x – 2) = 2x^2 + 9x - 2
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2/9=2.50
Allowence=2.50x9 divided by which gives you an answer of 11.25
Hope this helps you!
        
             
        
        
        
(3x + 5)° + (10x - 7)° = 180°
13x + (-2) = 180
13x = 180 + 2
13x = 182
x = 14
∠QRT = 3 * 14 + 5 = 42 + 5 = 47°
∠TRS = 10 * 14 - 7 = 140 - 7 = 133°
 
        
             
        
        
        
Answer:
Please check the explanation.
Step-by-step explanation:
Given the English statement 
''The sum of two and number is less than five''.
Let us breakdown the statement.
- The sum of two and number = 2 + n
We know that the less than symbol is denoted by '<' which is used for comparison.
Thus, the statement 'The sum of two and a number is less than five' is algebraically represented as:
Let us solve the algebraic expression.

Subtract 2 from both sides

Simplify

Thus, the solution is:

Please also check the attached solution line graph.