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marysya [2.9K]
3 years ago
10

2. A coat costs 3 times as much

Mathematics
1 answer:
djverab [1.8K]3 years ago
5 0
135 is the answer because ^ they said it
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3 years ago
How much water should we add to 35kg of sugar syrup to change it's concentration from 30% to 25%
agasfer [191]

Answer:

Water = 1/5 of the volume of the syrup

Step-by-.step explanation:

Suppose we had  1000 cm^3 of syrup  and the new volume after adding water is x cm^3.  Now the amount of sugar stays the same so we have the equation 35 * 1000 =  25 * x

x = (30 * 1000) / 25 =  30,000 / 25

= 1200 cm^3

So we need to add 200 cm^2 of water .

In general terms,  we need to add water which equals 1/5 of the volume of the syrup,

4 0
4 years ago
Please please please please help me
Natali5045456 [20]

3(x - 3) + 8x = 5(2x + 1)

Expanding the terms,

3(x - 3) + 8x = 5(2x + 1) \\ 3x - 9 + 8x = 10x + 5

Collecting like terms,

3x - 9 - 8x = 10x + 5 \\ 3x - 8x - 10x = 5 + 9

Evaluating the terms,

3x - 8x - 10x = 5 + 9 \\  - 15x = 14

Divide both sides by -15,

- 15x = 14 \\ x =   - \frac{14}{15}

7 0
3 years ago
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6x 0.5-3<br><br> How do I solve this as a decimal?? Please help!!
Margarita [4]

Answer:

3x−3

Step-by-step explanation:

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3 years ago
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