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denis-greek [22]
3 years ago
15

The ratio of boys to girls in a choir is 3 to 6. There are 30 girls in the choir.

Mathematics
2 answers:
agasfer [191]3 years ago
5 0

Answer:

45 members are in the choir.

Step-by-step explanation:

Set up an equation:

Variable x = boys

3/6 = x/30

Cross multiply:

3 × 30 = 6 × x

90 = 6x

Divide both sides by 6:

15 = x

There are 15 boys.

To find the number of members in the choir, add the number of boys and girls:

30 + 15 = 45

lubasha [3.4K]3 years ago
3 0

Answer:

45 members

Step-by-step explanation:

\frac{3}{6} :\frac{y}{30}

y · 6 = 3 · 30

6y = 90

6y ÷ 6 = 90 ÷ 6

y = 15

30 + 15 = 45

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Hello from MrBillDoesMath!

Answer:

For  0 <= x < =40 the function is that of the straight line 15x which has slope 15. Note that at x = 40 the value of the function is 15(4) =600

For x > 40 , the function is another straight line but with slope 20. This line is steeper than the 15x line but for x near, but slightly greater than  40, the value is close to 600 + 20 (40-40)  or 600 + 20(40-40) = 600.  This is the same value as the first line, 15x, at x = 40.

In summary, the graph of p(x), from   0 <= x <=40, is a line of slope 15 and for x>40 is a line of slope 20.  p(x) has a removable discontinuity at x = 40 because  p(x) approaches 600 as x approaches 40, regardless of the method of approach (i.e. whether x  approaches 40 from values less than 40 or from values greater than 40)




Thank you,

MrB


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