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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

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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Tatiana is practicing shooting. The coordinates (in m) of the barrel of her gun and the target are (5, 3, 1) and (38, 41, 3). Wh

saul85 [17]

Answer:

$d=\sqrt{2,537}\ m$ or $d=50.37\ m$

Step-by-step explanation:

we know that

the formula to calculate the distance between two points in three dimensions is equal to

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

Let

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

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

substitute the values

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

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

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

$d=\sqrt{2,537}\ m$

$d=50.37\ m$

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3 years ago

Lillian built a staircase out of blocks. She used 3 blocks to make the first step, 6 blocks to make the second step and 9 blocks

sashaice [31]

Answer:

30

Step-by-step explanation:

if you take 3+6+9+12 you get 30

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3 years ago

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Mrrafil [7]

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3 years ago

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Murrr4er [49]

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2. What is 18% of 29?

mylen [45]

Answer:

5.22

Step-by-step explanation:

18% = 18/100 or 0.18

18/100 * 29 = 522/100 or 5.22

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3 years ago