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andre [41]
2 years ago
6

For every 30 minutes she dances, Nell stretches for 10 minutes. What is the ratio value of the time Nell dances to the

Mathematics
2 answers:
dimaraw [331]2 years ago
4 0

Answer:

  • A. 3

Step-by-step explanation:

For every 30 minutes she dances, Nell stretches for 10 minutes

<u>Ratio:</u>

  • Dance / Stretch = 30 min / 10 min = 3/1 = 3
pashok25 [27]2 years ago
3 0

Answer:

30

Step-by-step explanation:

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The first thing we are going to do is rewrite the expression correctly.
 We have:
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 Rewriting:
 root ((27/300) * (x ^ 12 / x ^ 8))
 root ((9/100) * (x ^ (12-8)))
 root ((9/100) * (x ^ (4)))
 root ((9/100) * (x ^ (4)))
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If the graphs of the equations do not intersect
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A pharmacist needs 500 milliliters of a 20% phenobarbital solution but has only 5% and 25% phenobarbital solutions available. Fi
sladkih [1.3K]

Let x be ml of 5% soln.

let 500-x be ml of 25% soln.

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x*.05=.05x

(500-x)*.25=125-.25x

500*.20=100

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.05x+125-.25x=100

-.2x=-25

x=-25/-.2

x=125 ml of 5% soln.

500-x=375 ml of 25% soln.

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Check:

125*.05= 6.25

375*.25=93.75

---------------

========100

7 0
2 years ago
1/7 times x = 1<br> 5/4 times x=1<br> 3 1/2 times x=1<br> 5/7 times x=1
antiseptic1488 [7]
( i )

=  > \frac{1}{7}  \times x = 1 \\  \\  \\  \\  =  >  \frac{1}{7}  \times 7  \times x = 1 \times 7 \\  \\  \\  \\  =  > x = 7



( ii ) :


=  >  \frac{5}{4}  \times x = 1 \\  \\  \\  \\  =  >  \frac{5}{4}  \times  \frac{4}{5}   \times  x = 1 \times  \frac{4}{5}  \\  \\  \\  \\  = > x =  \frac{4}{5}



( iii ) :


=  >  3\frac{1}{2}    \times x = 1 \\  \\  \\  \\   =  >  \frac{7}{2}  \times x = 1 \\  \\  \\  \\  =  >  \frac{7}{2}  \times  \frac{2}{7}  \times x = 1 \times  \frac{2}{7}  \\  \\  \\  \\  =  > x =  \frac{2}{7}



( iv ) :


\frac{5}{7}  \times x = 1 \\  \\  \\  \\  =  >  \frac{5}{7}  \times  \frac{7}{5}  \times x = 1 \times  \frac{7}{5}  \\  \\  \\  \\  =  > x =  \frac{7}{5}
5 0
3 years ago
One lap around a standard high-school running track is exactly 0.25 miles. Write the function miles_to_laps() that takes a numbe
Vladimir79 [104]

Answer:

Step-by-step explanation:

The following code is written in Python. It is a function that takes in the number of miles as an argument and returns the number of laps that those miles represents.

def miles_to_laps(miles):

   laps = miles / 0.25

   return laps

6 0
2 years ago
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