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Greeley [361]
3 years ago
14

Please help me I don’t understand anything about this

Mathematics
2 answers:
Sonja [21]3 years ago
5 0

Answer:

2x/x+7

Step-by-step explanation:

1. combine them together getting

   2x^2-6x/x^2+4x-21

2. factor the top and bottom

  2x(x-3) / (x-3)(x+7)

3. then cancel out the x-3

Alik [6]3 years ago
3 0

Answer:

B

Step-by-step explanation:

It can be crossed if sides are same in multiply, as shown in the answer

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6. The temperature of an iron block decreases from 85°C to 25°C. If the mass for
Fittoniya [83]

Answer:

8280 cal

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4 0
3 years ago
In Chemistry class, Samantha finds that she can make a certain solution by mixing 0.04 liters of chemical A with 0.02 liters of
Jet001 [13]

Answer:

  0.16 liters of water

Step-by-step explanation:

Samantha's recipe makes 0.06 liters of solution. She wants 0.48 liters of solution, an amount 0.48/0.06 = 8 times as great as made by one recipe.

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Samantha will use 0.16 liters of water to make 0.48 liters of solution.

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Alternate solution

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8 0
2 years ago
Read 2 more answers
X
S_A_V [24]

Answer: 19

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Multiplying both sides of the equation by -3 gives that x=19.

7 0
1 year ago
3/12 ÷ 6/12 ????????????
Ahat [919]

Answer:

The answer is 0.5, or 1/2.

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Hope this helps!


4 0
3 years ago
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