Erin has already walked 6 kilometers this week, plus she plans to walk 1 kilometer during each trip to school. how many trips will Erin have to make in all to walk a total of 20 kilometers?

mr. graef told us it is 13 pints

step-by-step explanation:

answer: what in the world is this

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).