A board is leaning against a vertical wall. One end of the board rests on the ground at a point eight feet from the wall. The other end of the board touches the wall at a point that is six feet above the ground.

Use a trigonometric function to determine the angle that the board creates with the ground (m∠A). In at least two sentences, explain why you chose your specific function and how it applies to the measure of angle A.

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

What could explain what happened when the time was equal to 120 minutes