Barb and Jim each make a number pattern. The first 5 terms in each pattern are shown below. The patterns continue. Barb's pattern: 7, 10, 13, 16, 19
Jim's pattern: 7, 11, 15, 19, 23
Explain why the sum of any term in Barb's pattern and the corresponding term in Jim's pattern will always be a multiple of 7.

answer: asdfghjkl,mnbv

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

i think its a.

hope this