6a) a total of 5000 students attend the st. catherine high school. The ratio of teachers to students 6:25.
i) how many teachers are there in the school?

b) a quarter of the students in the school owns i-phone classic 20.
(ii) how many students DO NOT own an i-phone classic 20?

c) 60% of the students who own an i-phone classic 20 also owns a samsung galaxy a80s.
(i) what fraction of the students in the school own samsung galaxy a80s?

Please show all working
thanks

Answers

Answer 1

Answer:

a) (i) 1200

b) (ii) 3750

c) (i) [tex]\frac{3}{20}[/tex]

Step-by-step explanation:

a) Total number of students = 5000

Ratio of teachers to students = 6 : 25

i) Number of teachers = ?

By the given ratio, we can let the number of teachers = 6[tex]x[/tex]

and we can let the number of students = 25[tex]x[/tex]

[tex]25x = 5000\\\Rightarrow x = 200[/tex]

Therefore, number of teachers = 6 [tex]\times[/tex] 200 = 1200

b) A Quarter of the students own i-phone classic 20.

ii) Number of students who do not own an i-phone classic?

As per question statement,

Number of students who own i-phone classic 20 = [tex]\frac{1}{4}\times 5000[/tex] = 1250

Number of students who do not own i-phone classic 20 = 5000 - 1250 = 3750

c) Number of students who own samsung galaxy a80s = 60% of students who own i-phone classic 20 = [tex]\frac{60}{100}\times 1250[/tex] = 750

Fraction of students who own samsung galaxy a80s = Number of students having samsung a80s divided by total number of students

[tex]\dfrac{750}{5000} = \dfrac{3}{20}[/tex]


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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Solution:

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[tex]\begin{center}\begin{tabular}{ c c}x & y \\ 2 & -6 \\ 4 & 4 \\ 6 & 6 \\ 8 & 8 \\ 10 & 10 \\ 12 & 12 \\\end{tabular}\end{center}[/tex]

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it’s 45, since the bottom corner is 90, the top one is 45 bc if you turn it into a rectangle it has to be 90 also and half of that is 45, 90 plus 45 is 135 and all the angle of a right triangle make 180, so 180 minus 135 is 45
Answer: 45 maybe???

Explanation

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thank you for the pointsss!

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What is the question?????????\

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Answers

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[tex]Length = 41\frac{7}{16}[/tex]

Step-by-step explanation:

Given

[tex]Width = 8\frac{1}{2}[/tex]

[tex]Length = 4\frac{7}{8}[/tex] times as long as the width

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[tex]Length = 4\frac{7}{8} * Width[/tex]

Substitute [tex]8\frac{1}{2}[/tex] for width

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[41 points if correct]

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Hiii..I’m new in Brainly ....plzzzz thnx my this and other 5-6 answers



3) SI = ₹15600
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R= 10%

Time= SI × 100/P ×R
= 15600 ×100/12000 ×10
= 13 yrs.


6) Time = 4 yrs.
SI= ₹2100
R= 5%

SI= P ×R ×T/100
P=SI ×100/R ×T
P= 2100 ×100/5 ×4
P=2100 ×100/20
P= 2100 ×5
P = ₹10500

11) Let P= x
R=8%
SI= 54000
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Amount = P [1+ (T ×R/100)]
2x= x [1+(T × 8/100)]
2x/x= 1+ (T × 8/100)
2-1= T ×8/100
1 ×100/8 =T
100/8=T
12.5 yrs.=T

Write as a single fraction in its simplest form

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With steps plz :))

Answers

[tex](2x - \frac{1}{3} ) - ( \frac{2}{x} + 1)[/tex]

[tex]2x - \frac{1}{3} - \frac{2}{x} + 1[/tex]

[tex](2x - \frac{2}{x} ) + ( - \frac{1}{3} + 1)[/tex]

[tex] (\frac{2 {x}^{2} }{x} - \frac{2}{x} ) + ( \frac{ - 1}{3} + \frac{3}{3} )[/tex]

[tex] \frac{2 {x}^{2} - 2 }{x} + \frac{ - 2}{3} [/tex]

We want to write the given expression as a single fraction. We will get the fraction:

[tex]\frac{6*x^2 - 4*x - 6}{3*x}[/tex]

Rewriting the expression.

So we start with the expression:

[tex](2*x - \frac{1}{3}) - (\frac{2}{x} + 1)[/tex]

First, let's rewrite each of these parenthesis as fractions, we need to have the same denominator in all the terms, then in the first one we can multiply and divide by 3 (and in the second one we can do the same but with x) so we get:

[tex](\frac{3}{3} *2*x - \frac{1}{3}) - (\frac{2}{x} + 1*\frac{x}{x} )\\\\(\frac{6*x}{3} - \frac{1}{3}) - (\frac{2}{x} + \frac{x}{x} )\\\\\frac{6*x - 1}{3} - \frac{2 + x}{x}[/tex]

Now we must multiply and divide the left term by x, and the right term by 3, so we get:

[tex]\frac{x}{x} \frac{6*x - 1}{3} - \frac{2 + x}{x}*\frac{3}{3} \\\\\frac{6*x^2 - x}{3*x} - \frac{6 + 3x}{3*x} = \frac{6*x^2 - x - 3x - 6}{3*x}\\\\\frac{6*x^2 - 4*x - 6}{3*x}[/tex]

This is the fraction in its simplest form.

If you want to learn more about fractions you can read:

https://brainly.com/question/11562149

Is it a function ?
{(0,1), (2,4), (0,-2), (9,10)}

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Yes because for every x value there is only one y value that corresponds it that being said y values can be repeated but only x values can not
i also agree with the person above me
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