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Sunny_sXe [5.5K]
3 years ago
12

Whats the answer two -x+4=1

Mathematics
1 answer:
blagie [28]3 years ago
8 0
Its suposed to be-5+4=-1
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Biruk wants to buy a book for $15.25 and a book for $4.85. He wants to pay with one $20 bill. Use estimation to decide if this i
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First round 15.25 to 15.30 and round 4.85 to 4.90 and then add you get 21.20  no it is not reasonable and you round to the decimal ones
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A 20-ounce candle is expected to burn for 60 hours. A 12-ounce candle is expected to burn for 36 hours. Assuming the variables a
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Because the ratio for both candles is 20/60 or 1/3 then take the number of ounces the candle has and divide by 1/3. In expression: 9 / 1/3 => 9 * 3 = 18
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What expression can be used to represent the phrase " 3 more than 2 times the number of minutes, m"?
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The answer is B, 2m +3

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A person has 100 notes of Rs. 10 and Rs. 20 each. He went to a shop and bought items for Rs. 220. In how many ways can he pay th
Alekssandra [29.7K]

There are 12 ways he can pay this amount using the notes he has the answer is 12.

<h3>What are permutation and combination?</h3>

A permutation is the number of different ways a set can be organized; order matters in permutations, but not in combinations.

Let x be the number of Rs10 notes and y be the Rs20 note

10x + 20y = 220

The whole number of x and y which satisfy the above equation:

x = 0, y =11

x = 2, y =10

x = 4, y =9

x = 6, y =8

x = 8, y =7

x = 10, y =6

x = 12, y =5

x = 14, y =4

x = 16, y =3

x = 18, y =2

x = 20, y =1

x = 22, y =0

Total number of ways = 12

Thus, there are 12 ways he can pay this amount using the notes he has the answer is 12.

Learn more about permutation and combination here:

brainly.com/question/2295036

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2 years ago
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Factorise the following expression using grouping. <br><br> 11x - 55 - 5a + ax
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11x - 55 - 5a + ax

11 (x - 5) - a ( 5 + x )

Answer:

11 (x - 5) - a ( 5 + x )

3 0
3 years ago
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