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RUDIKE [14]
3 years ago
15

an electrician charges an initial fee of $250 plus and hourly fee of $25. Mr.Scott paid the electrician $400. How many hours did

the plumber work
Mathematics
1 answer:
mixas84 [53]3 years ago
5 0

Answer:

The plumber worked for 6 hours.

Step-by-step explanation:

400-250=150

150/25=6

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Answer:

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Step-by-step explanation:

we know that

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d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}+(z2-z1)^{2}}

Let

A(5,3,1)  -----> coordinates of the barrel of her gun

B(38,41,3)  -----> coordinates of the target

substitute the values

d=\sqrt{(41-3)^{2}+(38-5)^{2}+(3-1)^{2}}

d=\sqrt{(38)^{2}+(33)^{2}+(2)^{2}}

d=\sqrt{1,444+1,089+4}

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3 years ago
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sashaice [31]

Answer:

30

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5.22

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