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Step-by-step explanation:

Mass after 50 days = ?

Beginning mass

mass 1/2 life = 64.9

Mass after 50 days = beginning mass (1/2)^(t/64.9)

Mass after 50 days = 10 * 1/2 ^ (50 / 64.9)

Mass after 50 days = 10 * 0.586

Mass after 50 days = 5.86 mg

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: