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aleksandr82 [10.1K]
3 years ago
8

Determine the AP whose 3rd term is 5 and 7th term is 9

Mathematics
1 answer:
lina2011 [118]3 years ago
4 0

what is the question ask to do

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Help me someone:((!!!!!
LiRa [457]

Answer:

Hope this helps!

Step-by-step explanation:

2L + 3S = 83

 

4L + 8S = 197

 

Multiplies the top equation by -2.

-4L + -6S = -166

 

4l  + 8S = 197

 

 

Adding them together...

 

2S = 31

 

S = 31/2 = 15.5

 

Plugging into the first equation:

 

 2L + 3S = 83

 

 2L + 3(15.5) = 83

 

2L + 46.5 = 83

 

2L = 83 - 46.5

 

2L = 36.5

 

L = 36.5/2 = 18.25

 

check:

 

2L + 3S = 2(18.25) + 3(15.5) = 36.5 + 46.5 = 83

 

4L + 8S = 4(18.25) + 8(15.5) = 73 + 124 = 197

 

The Large box weighs 18.25

The small box weighs 15.5

6 0
2 years ago
7(8 + y) simplified?
Juli2301 [7.4K]

Factor out the equation

(7 x 8) + (7 x Y)

56 + 7y

3 0
3 years ago
Pls help (mathematics)
olga2289 [7]

Answer:

I agree with all of them

Step-by-step explanation:

they are all connected mathematically (I used 3.14 I hope that the right idea)

7 0
3 years ago
A 7-day cruise is being advertised for 849$. What is the unit price per day?
gtnhenbr [62]

Answer:

$ 121.29

Step-by-step explanation:

849 / 7 = 121.28571428571

rounded to 121.29

3 0
3 years ago
Read 2 more answers
a red lamp flashes every 10 seconds ,a yellow lamp flashes every 24 seconds and a blue lamp flashes every 30 seconds.How many ti
jeka57 [31]

Answer:

600x

Step-by-step explanation:

10 x 24x 30 - 10x 60x

7 0
3 years ago
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