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Marta_Voda [28]
3 years ago
13

Find the product. (s + t)(5s – 7t)

Mathematics
2 answers:
nevsk [136]3 years ago
7 0

Answer and Step-by-step explanation:

<u>Distribute the s, then distribute the t, then finally simplify.</u>

<u></u>

<u></u>5s^2 - 7st\\5st - 7t^2\\\\5s^2 - 7st + 5st - 7t^2\\\\5s^2 - 2ts = 7t^2<u><-- This is the answer.</u>

<u></u>

<u></u>

<u>#teamtrees #PAW (Plant And Water)</u>

joja [24]3 years ago
6 0

Answer:

5s^2 - 30st - 7t^2

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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The average time before breakdown of a machine is normally distributed and has a mean of 18 weeks and a standard deviation of th
IceJOKER [234]

Answer:

19.24 weeks

Step-by-step explanation:

Given that;

Mean, m = 18

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The optimal preventive maintenance level is Given by :

Mean + service level * standard deviation

Service level = preventive maintenance cost / (breakdown cost + preventive maintenance cost)

Hence,

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8 0
3 years ago
PLEASE HELP!!!<br><br><br>Solve.<br><br><br><br>a - 2b = 2<br>a + b = 2 ( b + 3 )
wolverine [178]

a-2b=2.........(1)

a+b=2(b+3)

a+b=2b+6

a-b=6.......(2)  

a-2b= 2

a-b= 6

Eliminate y  

multiply (1)by -1  

Multiply (2) by 2  

-a+2b=-2

2a-2b=12

Add the two equations  

a = 10

plug value of a in (1)  

1a +-2b=2

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Hope this helped:)




3 0
4 years ago
I will mark brainliest
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6 0
3 years ago
Help me out with this problem please!!!Its worth 10 points and I really don’t understand it! Please help a person out,please tel
gayaneshka [121]
Let's say H represents the number of Hip-hop songs and P the number of Pop songs:

The first equation that describes the number of songs: H + P = 25    
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5 0
3 years ago
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