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RideAnS [48]
3 years ago
9

Write an equivalent expression. 15a - 20 + 10a = 5 ( ? a - ? )

Mathematics
2 answers:
nalin [4]3 years ago
8 0
The answer is: 5 (5a - 4)
blsea [12.9K]3 years ago
8 0

Answer:

yeswd

Step-by-step explanation:wwwwwwwwwwwww

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There are 9 people that have a conversation with each other exactly one time.
Sedbober [7]

The question is an illustration of arithmetic sequence.

<em>The number of conversation for 19 people is 171</em>

<u />

<u>(a) 9 people</u>

Total = \frac{9 \times 8}{2}

9 represents the number of people

8 represents the number of conversation each person had

2 represents the number of people having a conversation at once (i.e 2 people at once)

<u>(b) 19 people</u>

We have:

n = 19

The number of conversation is:

Total = \frac{n \times (n -1)}{2}

So, we have:

Total = \frac{19 \times (19 -1)}{2}

Total = \frac{19 \times 18}{2}

Total = 19 \times 9

Total = 171

Hence, the number of conversation for 19 people is 171

Read more about arithmetic sequence at:

brainly.com/question/18109692

5 0
2 years ago
What is the value of xif 5x + 55 = 35?
Anettt [7]

Answer:

-4

Step-by-step explanation:

5 x(-4) = -20

50 - 20 = 35

8 0
3 years ago
5. After paying a tax of 8 palsa per rupee a man saves Rs. 18,400 per month Then his monthly income is 2 Points) 20,000​
Hunter-Best [27]

Answer:

92% of Income is  Rs 18400

Step-by-step explanation:

I = 18400/.92 = Rs 20000

8 0
2 years ago
There were 724 zombies that attacked a player in Call of Duty. The player killed 65%. How many zombies did the player kill?
kvasek [131]

Answer:

470 zombies

Step-by-step explanation:

To find how many they killed, multiply 724 by 0.65

724(0.65)

= 470.6

Round down to 470, since there can only be a whole number for zombies

So, the player killed approximately 470 zombies

4 0
2 years ago
PLEASE HELP! POINTS!<br><br><br> Graph y =  – 4/3x + 1
9966 [12]
I'm kind of thrown off for that negative sign, but I try it out in the one that makes sense is this one [ https://gyazo.com/192a76e70d2d46979691cabbf06e6c85 ] If you can better of explain where the negative sign will be great. Hope I helped. 
4 0
3 years ago
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