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snow_tiger [21]
3 years ago
5

A segment has endpoints at (15,-11) and (42,-11).How many units long is the segment?

Mathematics
2 answers:
vfiekz [6]3 years ago
6 0
Id say the answer is D i might be wrong tho
Goshia [24]3 years ago
5 0
Hey there,

You have to use this formula : 

D= \sqrt{( x_{2} -  x_{1})^2 + ( y_{2} - y_{1} )^2  }
D=  \sqrt{(  42 - 15  )^2+(  -11 + 11  )^2
D=  27

Therefore, the answer would be the option B.

Hope this helps !

Photon
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2. There are some benches in a classroom. If 4 students sit on each bench then 3 benches
NARA [144]

Answer: There are 48 students in the class.

Step-by-step explanation:

Let the number of students = S

Let the number of benches = B

<em>If 4 students sit on each bench, 3 benches are left vacant.</em>

S = 4(B - 3)

S = 4·B - 12 } Equation 1

<em>If 3 students sit on each bench, 3 students still standing.</em>

S = 3·B + 3 } Equation 2

We can match the two equations because they both indicate the same number of students.

4B - 12 = 3·B + 3

on solving this

4·B - 3·B = 3 + 12

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S = 60 - 12 = 48 → number of students

Answer: There are 48 students in the class.

<h3>Verification</h3>

There are 48 students and 15 benches.

<em>If 4 students sit on each bench, 3 benches are left vacant.</em>

48students ÷ 4students/bench = 12 benches are occupied and left 3 vacant benches.

<em>If 3 students sit on each bench, 3 students still standing.</em>

<h3 />

15benches * 3 students/bench = 45 students are sitting and 3 students remain standing.

<h3>Checked!!</h3>

\textit{\textbf{Spymore}}​​​​​​

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Step-by-step explanation:

You take 150 and divide it by 10 which gives you 15. since you divide it by 10 and it gives you 15 that means ten percent is 15 centimeters. since we need to find out what the 16 percent is we take the 15 and divide that by 10 which gives us 1.5. That tells us every 1 percent, is 1.5 centimeters. you take the 150 and add 15 and that gives you 165. We have already done 10 percent out of the 16 percent . Now we have to figure out how much the rest of the 6 percent is so we take the 1.5 and multiply it with the 6 and we get a 9. That covers up for the rest of the 6 percent out of the 16 percent. Now we add 165 with 9 to get our answer of 174 centimeters.

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