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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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41x0x3 what property is this
Drupady [299]

The Multiplication Property of Zero.

It states "the product of any number and zero is zero". Even if there are more than one multiplier - it is still 0.

So 5 x 0 = 0

100 x 0 = 0

41 x 0 x 3 = 0

etc.

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2 years ago
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A 40-inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piec
tiny-mole [99]

Answer:

The first piece is 5 inches long, while the second is 15 inches and the third one is 20 inches.

Step-by-step explanation:

To determine the length of the 3 pieces, knowing that the total of the board is 40 inches, and that the second measures 3 times more than the first and the third measures 4 times more than the first, the following equation must be performed:

X + 3X + 4X = 40

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X = 40/8

X = 5

Therefore, the first piece is 5 inches long, while the second is 15 inches and the third 20 inches.

8 0
3 years ago
System OT<br> W + b =13<br> 6.5w + 2b = 57.5
mixer [17]

Answer:   w = 7,  x = 6

Step-by-step explanation:  Solve by substitution

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6.5w + 2b = 57.5  Then solve for w

6.5w + 2(13-w) = 57.5 . Distribute

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6.5w - 2w = 57.5 - 26

4.5w = 31.5  Divide both sides by 4.65

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b = 6

6 0
2 years ago
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bekas [8.4K]

Answer:

3

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6 0
3 years ago
3 Questions Math! HELP!!!
Sveta_85 [38]
1) Since the larger number is a negative, you’re going to get a negative solution for number one. An easy way to do the math is to ignore the negative sign in (-116) For a moment. And subtract 56 from it.
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2) We do the same thing we did in number one, but with new numbers. The answer in total is -178.

3. As stated, we do the same thing we did in number one. Just because there’s a decimal doesn’t change much. And your answer would be -1.1
8 0
3 years ago
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