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IceJOKER [234]
3 years ago
10

while exercising julie found that her hear was beating 12 times every 5 sec.how many timewas it beating 60 sec

Mathematics
2 answers:
hichkok12 [17]3 years ago
8 0
Write and solve an equation of ratios, as follows:

5 sec           12 beats
---------  =    -------------
60 sec                x

5x=720       x= 144 beats in 60 sec  
seropon [69]3 years ago
5 0
Heart beats 12 times every 5 seconds, i.e. using proportions,
12/5 = x/60
Cross multiply:
x=60*12/5=144

Answer, Julie's heart beats 144 times per minute while exercising.
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28/29 and 30 please short explanation thanks
Bond [772]

Answer 28.

Possible values for the three factors of -3

  1. 1, -1 and 3
  2. -1.5, 1 and 2
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Answer 29.

The product of two nonzero integers will be less than or equal to both of the integers if they are multiplied by number itself and one or by number itself and one with negative sign.

Answer 30.

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7 0
3 years ago
Lcm of (x-2)(x+3) and 10(x+3)^2
Arte-miy333 [17]
Least common multiple: factor them, then see what they have in common and what is leftover and multiply those expressions:

(x - 2)(x + 3)          10(x + 3)(x + 3)
Common: (x + 3)
Leftover: (x - 2), (10), (x + 3)
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Answer: LCM is 10(x - 2)(x + 3)²


8 0
3 years ago
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