Solve for the variable a in this equation. c = 8πab

a = c / 8πb

Step-by-step explanation:

To solve for the variable a or to make a subject of the formular, we divide bothside by 8πb

c /8πb = 8πab/8πb

c / 8πb = a

a = c / 8πb

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)

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point