Which equation could be used to solve for the measure of angle O?(1 point) Circle N is shown with a quadrilateral OPQR inscribed inside it. Angle O is labeled x degrees. Angle P is labeled y degrees. An x + z = 180 x + y = 180 x − (y + z) = 360 x + y + z = 360

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

a

b

d

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation

step-by-step explanation:

what is the figure? attach a picture.