21. The graph shows the distance Julie walls ousty time. Does she walk at a constant or variable
speed? How fast is Julie walking?
3
s
Distance (mi)
4 3 2
1
2 3
Time (h)
a. vanable speed, 8 mih
b. constant speed: 4 mvh
c. constant speed: 2 mvh
d. constant speed: 8 muh

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.

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Anyone know? is appreciated! will mark brainliest if correct!