Which statement best describes the polynomial? -24x^7-12x^2-9x+6

a. it is in standard form because the exponents are in order from highest to lowest.
b. it is in standard form because the coefficients are in order from highest to lowest.
c. it is not in standard form because the constant should be the first term.
d. it is not in standard form because it can be further simplified.

Complete the steps to find 4.830 ÷ 5

Anyone know these questions? i need ,.

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.