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svetoff [14.1K]
3 years ago
5

The temperature decreased from 71.5*F to 56.8*F overnight. How much did the temperature drop?

Mathematics
2 answers:
Alina [70]3 years ago
8 0
The word decreased shows that you need to use subtraction for this problem.

Take 71.5*F - 56.8*F = 14.7*F that the temperature dropped
NeTakaya3 years ago
6 0
You use subtraction:
71.5*F- 56.8*F= 14.7*F
Hope this helps~
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Answer:

  • <em>Refer to attached.</em>

Part 1

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Part 2

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Part 3

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U=(1,2,3,4,5,6,7,8),a=(1,3,5,7), b=(4,5,6) is it true statement
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<u>Answer:</u>

U=(1,2,3,4,5,6,7,8), a=(1,3,5,7), b=(4,5,6) is false statement

<u>Solution:</u>

Given, two sets are a = (1, 3, 5, 7) and b = (4, 5, 6).

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We have to find that whether above sets are true or not.

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Now, according to our knowledge.

Union of a and b = (1, 3, 5, 7, 4, 6)  

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Karolina [17]

donuts and cream puffs were  45 & 4 respectively !

<u>Step-by-step explanation:</u>

Here we have , twice the number of donuts was only 6 less than 24 times the number of cream puffs. 10 times the number of cream puffs was only 5 less than the number of donuts   We need to find how many donuts and cream puffs were there . Let's find out:

Let number of donuts and cream puffs are x & y respectively ! So ,

  • twice the number of donuts was only 6 less than 24 times the number of cream puffs

According to this statement equation is :

⇒ 2x=24y-6

⇒ x=12y-3            ................(1)

  • 10 times the number of cream puffs was only 5 less than the number of donuts

According to this statement equation is :

⇒ 10y= x-5

⇒ x=10y+5               ................(2)

Equation (1) & (2) :

⇒ 12y-3=10y+5

⇒ 2y=8

⇒ y=4

Putting  y=4 in  x=12y-3  :

⇒ x = 12(4)-3

⇒ x = 45

Therefore , donuts and cream puffs were  45 & 4 respectively !

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