Determine whether statement (3) follows from statements (1)
and (2) by the law of detachment or by the law of syllogism.
write invalid if neither law applies.
(1) if you swim, you must use earplugs.
(2) roy swims.
(3) roy must use earplugs.

Eric and shiloh each have a savings account. the ratio of eric’s account balance to shiloh’s account balance is 4: 3. together they have a total of $140 in their accounts. use the tape diagram below to you determine the balance of eric’s account.