Find the value of x. if your answer is not an integer, leave it in simplest radical form.
the image is of a regular right triangle with base x and altitude 20. the angle between hypotenuse and base is 30 degrees.

a. x=203√
b. x=403√
c. x=20
d. x=40

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.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?