Given expression:
2x(x + 7)-(3x +1);
To distribute implies to spread a process equally in an expression. Often times, the distributive property is used for expressions inside parentheses;
2x(x + 7)-(3x +1)
Distribute 2x over the first parentheses;
the negative sign distributes over the second part
= (2x² + 14x) - 3x -1
= 2x² + 14x -3x -1
Add like terms;
= 2x² + 11x -1
This expression 2x² + 11x -1 is equal to the given one
The horizontal distance to the control tower is approximately 18506.83m
Data;
- distance from the ground = 3900m
- angle of elevation = 11.4 degrees
- horizontal distance = ?
<h3>Trigonometric Ratio</h3>
To solve this problem, we need to use trigonometric ratio SOHCAHTOA.
In this case, we have the value of opposite and angle and we need to find the adjacent to the angle. The tangent of the angle would be perfect for this.

The horizontal distance to the control tower is approximately 18506.83m
Learn more on trigonometric ratio here;
brainly.com/question/4326804
Subtract 350 from both sides then divide both sides by 25.
(c-350)/25 = h
Answer:
x=46
Step-by-step explanation:
subtract 13 from both sides
x=59-13=46
Answer:
13.6 km/h?
Step-by-step explanation:
98 ÷ 7.2 = 13.61