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marta [7]
3 years ago
8

Whats the inequality of R-2<7

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0

Answer:

R=9

Step-by-step explanation:

Change the sign of -2 to 2

Add 2 to 7

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How many times can 250ml be taken from 2.5l
natka813 [3]
1 liter = 1,000 milliliters

2.5*1000=\\2500\\\frac{2500}{250}=\\10

10 times.
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4 years ago
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If 18 g of air has 48 J of heat added to it, what will be the change temperature? (C = 0.25 J/g x°C)​
Maurinko [17]

Explanation is in the file

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Don't know how to solve this? Please show work, thank you
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The sum of a number x and 2,496 is 17,344. What is the value of x
Sergeeva-Olga [200]

Answer:

x = 14,838

Step-by-step explanation:

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x + 2,496 = 17,344

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hope it helps you ☺️

4 0
3 years ago
The text book store sold a combined total of 326 history and chemistry textbooks in a week. The number of chemistry textbooks so
sergij07 [2.7K]

Answer:

The sentence

"The Number of Chem textbooks sold is 86 less than the number of History textbooks"

This seems to be the confusing part.

Now look at it this way...

'If CHM text is 86 less than History text... It also means that History Text is 86 More than CHM'

This expression can be written as

Let History Text be "H"

Let CHM text be "C"

C - 86 = H

or

C=H + 86.......1

First line of this question is interpreted thus

H + C = 326.......2

From eqn 1... C=H+86

Substitute into Eqn 2

H + C=326

H + (H+86)=326

H+H=326-86

2H=240

H=240/2

H=120.

C=H+86

C=120+86

C=206.

This answer is correct... Why?

The key statement says .. The Number of CHM sold is 86 less than History...

Also interpreted as

The Number of CHM – 86 = History

206 - 86 =120.

Have a great day!!!

8 0
3 years ago
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