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Drupady [299]
2 years ago
14

B/4 + 2 = -1 Please help, I’ll give brainliest to whoever answers correct first.

Mathematics
2 answers:
ale4655 [162]2 years ago
6 0

Answer:

B= -12

Step-by-step explanation:

-12/4 + 2= -1

leva [86]2 years ago
3 0

Answer:

\frac{b}{4}+2=-1

Subtract 2 from both sides:

\frac{b}{4}+2-2=-1-2

\frac{b}{4}=-3

Multiply 4 to both sides:

4*\frac{b}{4} =-3*4

b=-12

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<em><u>Solution:</u></em>

From given question,

Person 2 takes 30 minutes per procedure

Person 1 writes internal operating procedures 3 times faster than Person 2

So we get, Person 1 takes 3 times faster than Person 2

Person 1 takes 10 minutes per procedure

But two of the procedures for Person 1 took an hour each

So person 1 takes 60 minutes each for two of procedures ( since 1 hour = 60 minutes )

<em><u>Calculate how long it took Person 1 to complete 9 procedures:</u></em>

So for first 7 procedures person 1 would take 10 minutes per procedure and for last two procedures person 1 would take 60 minutes per procedure

time $=7$ procedures $\times \frac{10 \text { minutes }}{1 \text { procedure }}+2$ procedure $\times \frac{60 \text { minutes }}{1 \text { procedure }}$

time=70 minutes +120minutes\\\\time=190minutes

We know that,

1 hour = 60 minutes

Therefore,

190 minutes = 60 minutes + 60 minutes + 60 minutes + 10 minutes

190 minutes = 1 hour + 1 hour + 1 hour + 10 minutes = 3 hour 10 minutes

Therefore Person 1 takes 3 hour 10 minutes to complete 9 procedures

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3 years ago
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DanielleElmas [232]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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