A. What is an expression for the area of the rectangle? Simplify your answer. B. What is an expression for the area of the circle? Simplify your answer.

C. What is an expression for the area of the shaded region? Simplify your answer.

D. If the radius of the circle is 5cm, what is the area of the shaded region?

y/x=18

step-by-step explanation:

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)

answer: it's d

step-by-step explanation:

i need more details sorry

step-by-step explanation: