Can somebody me with this question, plzzz. and ignore question 8

A

Step-by-step explanation:

Make the equations using the law of sines.

sin(42)/x = sin(48)/57

Then solve for x.

x = 51.32

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)