•Find the first term in the sequence for which a20 =42 and d=2 •if r =2 and a6 = 96, find the first term of geometric sequence.
•find the sum of the first 10 terms of the series 4+20+100+500+__
•find the sum of the infinite geometric series 1/2+1/4+1/8+_

da freeck kinda math is this just drop out

step-by-step explanation:

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

step-by-step explanation:

mean or average is 40.6