Which of the following are zeros of the function P(x) = 4x4 + 8x3 - 7x2 - 21x - 9.

(1+/- sqr rt of 3) / 2
(1+/- sqr rt of 5) / 2
(1+/- sqr rt of 7) / 2
3/2

Timed*** there are 8 rows and 8 columns, or 64 squares on a chessboard. suppose you place 1 penny on row 1 column a, 2 pennies on row 1 column b, 4 pennies on row 1 column c, and so on … how many pennies are on each square? a =   b =   c = d =   e =   f = g =   h =

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab