Which equation has exactly one solution? A.0.5(3x- 9) + 20 = 0.5(3x- 49)
B.0.5(3x- 8) = 20 (0.5x - 1)
C.0.5(3x- 9) + 20 = 5(4x- 1)
D.0.5(3x- 9) + 20 = 0.5(3x- 1)

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.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?