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IceJOKER [234]
2 years ago
8

During a school event, there were 8 times as many pupils as teachers and there were three times as many boys as girls. There wer

e 70 fewer teachers than boys. How many people were there at the school event?
Mathematics
1 answer:
Lilit [14]2 years ago
3 0
We know that pupils are students

Students = S
boys = B
Teachers = T

So....

S = 8T
Boys = 3G
T = B - 70

Since there is 8x students than teachers, I did Boys = 6x and girls = 2x

I'm going to use this next: S = 8T

8x = 8(B -70)

8x = 8(6x - 70)

8x = 4x - 560

x = 14

We know there is 8x students, so there are 112 students and we know that there is 1/8 of teachers, so there are 14 teachers.

Answer = 126.
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Solve the inequality.<br> 4x + 3 &lt; 7 or 3x – 8 &gt; 7<br> -<br> x &lt; [?] or x &gt; [
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Answer:

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3 years ago
4. Stella says the equation x^2−8x+y^2+2y=5 has a center of (4,−1) and a radius of 5. Is she correct? Why or why not?
Ostrovityanka [42]
<h2>Stella is correct about center and wrong about radius      </h2>

Step-by-step explanation:

Equation of circle with (h,k) as center and radius r is given by,

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Here equation is

          x²−8x+y²+2y=5

Changing in to (x-h)²+(y-k)² = r² form

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           Center is (4,-1) and radius is 4.69

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