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bezimeni [28]
3 years ago
13

3+1 + - + ... ? What is the sum of the first 7 terms of this geometric series: 3+1+ 3

Mathematics
1 answer:
mote1985 [20]3 years ago
8 0

Answer:

15

Step-by-step explanation:

3+1+3+1+3+1+3= 15 this is what it would look like if you write it out. To save time do 3 times 4 to get 12 and then just add three ones to 12 to get 15.

You might be interested in
31 cars are in a race. In how many different ways can cars finish in order in the top 4 positions?
cupoosta [38]

Answer:

755,160 ways

Explanation:

We're told that 31 cars are in a race.

Considering the order in which the cars can finish in the top 4 positions, any of the 31 cars can finish in the first position, any of the remaining 30 cars can finish in the second position, any of the remaining 29 cars can finish in the third position and any of the remaining 28 cars can finish in the fourth position, so the different numbers of ways can be determined as seen below;

31\times30\times29\times28=755,160\text{ ways}

8 0
1 year ago
4) A sales associate in a department store earns a commission on each suit and each pair of shoes sold. One week, she earned $47
NeX [460]
Answer a write a system of equation 
8 0
3 years ago
PLEASEE HELP!!!!NO LINKS
tangare [24]

Answer:

I think it's choice B and D

Step-by-step explanation:

they both are a straight line and would both have a slope of zero. between point A and D is a slope obviously but D and F would not be the same slope because the line gets steeper. that's how I look at it. I'm pretty sure that's it.

8 0
3 years ago
Can someone help, please
Jet001 [13]

Answer: 5/1 or just 5

Step-by-step explanation:

6 0
1 year ago
Read 2 more answers
Factorise:<br> 8 x 3 + 729 +10800² + 486X.
hjlf

Answer:

(2x+9)  ^3

Step-by-step explanation:

 (((8 • (x3)) +  729) +  (22•33x2)) +  486x

 ((23x3 +  729) +  (22•33x2)) +  486x

Factoring:  8x3+108x2+486x+729  

 8x3+108x2+486x+729  is a perfect cube which means it is the cube of another polynomial  

 In our case, the cubic root of  8x3+108x2+486x+729  is  2x+9  

 Factorization is  (2x+9)3

Hope this helped

8 0
3 years ago
Read 2 more answers
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