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noname [10]
1 year ago
11

If xx and y vary directly and y is 21 when x is 7, find y when x is 5

Mathematics
2 answers:
Sedaia [141]1 year ago
6 0

Answer: y = 15

Step-by-step explanation:  

8_murik_8 [283]1 year ago
3 0

Answer:

y = 15

Step-by-step explanation:

We need to solve for k

y = x

21 = 7k  Divide both sides by 7 to solve for k

3 = k

y = xk

y = 5(3)

y = 15

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A theater charges $50 per ticket for seats in section a, $40 per ticket for seats in section b, and $20 per ticket for seats in
alukav5142 [94]
The first thing we must do for this case is to define variables.
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 z: ticket for seats in section c
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7 0
3 years ago
Vivian’s heart beats 82 beats per minute. a) How many times will her heart beat in 12 years? Ignore leap years. Show your work.
larisa86 [58]

Answer:

517190400 times

Step-by-step explanation:

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4920x24=118080 (per day)

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:D gl

7 0
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Is 1/8 bigger than 1/2
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