Regroup terms
Add 2x to both sides
Simplify 4 - x + 2x to 4 + x
subtract 4 from both sides
subtract -6 - 4.
Answer: x = -10
<span>Square and survey each have 6 letters, none of which are repeats. For the first position there are 6 possibilities, then 5 (6 minus the one you already used), and so on, or 6 factorial (6!). 6x5x4x3x2x1 = 720, so there are 720 combinations for each. I hope this helps!</span>
Let's create this right triangle. We will call it triangle ABC with angle B as the right angle, angle A being the larger of the angles A and C. If the ratio is 5:4, then it is A:C. 5+4 = 9. The measure of the right angle, angle ABC = 90, and 90 divided by 9 is 10. So angle A is 5 * 10 which is 50 degrees, and angle C is 4 * 10 which is 40 degrees. The smallest angle, angle C, is 40 degrees.