3 years ago

Nine out of 10 students prefer math class over lunch how many students do not prefer math is 200 students were asked

Mathematics

2 answers:

dezoksy [38]3 years ago

8 0

The answer is 180. Put 9over 10 times x over 200 and cross multiply

max2010maxim [7]3 years ago

4 0

Answer:

20 students prefer math

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The ratio of the number of mystery books to the number of science fiction books is 4:3. The ratio of the number of science ficti

vladimir1956 [14]

Given is the number of science fiction books = 48

Let the number of mystery books be = x

Let the number of biographies be = y

Ratio of the number of mystery books to the number of science fiction books is 4:3 so $\frac{4}{3}= \frac{x}{48}$

= $3x=48\times4$

$x=64$

Ratio of the number of science fiction books to the number of biographies is 4:5 so $\frac{4}{5}=\frac{48}{y}$

= $4y=5\times48$

$y=60$

Hence there are 48 science fiction books, 64 mystery books and 60 biographies.

So total number of books are = $48+64+60=172$

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Solve the given equation for .<br> (8x•Ax)/Bx=6

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Answer:

x= $\frac{3B}{4A}$

Step-by-step explanation:

8xax/bx=6

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