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AnnyKZ [126]
2 years ago
15

Question 2(Multiple Choice Worth 5 points)

Mathematics
2 answers:
hammer [34]2 years ago
8 0

Answer:

Your answer would be C

Step-by-step explanation:

mel-nik [20]2 years ago
8 0

Answer:I believe it would be C, but not 100% sure.

Step-by-step explanation:

Let me know if it is correct

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PLEASE HELP!!<br> What is the solution to this system of equations?
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Answer:

Step-by-step explanation:

There is no solution, because the lines do not intersect.

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There are 273 students in the 7th grade. If the
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Answer:

Each teacher will have 21 students

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273 divded by 21 = 21

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3 years ago
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One mixture contains 6 fluid Ounces of water and 10 fluid Ounces of vinegar. A second mixture
Nadya [2.5K]

Answer:

The mixtures are not proportional.

3 fluid ounces of vinegar has to be added in the second mixture to make it proportional to the first mixture.

its =3

Step-by-step explanation:

The one mixture contains 6 fluid ounces and 10 fluid ounces of water and vinegar respectively.

Therefore, the ratio of water to vinegar in the first mixture is 6 : 10 = 3 : 5

Now, a second mixture contains 9 fluid ounces of water and 12 fluid ounces of vinegar.

Hence, the ratio of water to vinegar in the second mixture is 9 : 12 = 3 : 4

Therefore, the mixtures are not proportional.

Therefore, we have to add x fluid ounces of vinegar to the second mixture to make it in the ratio of 3 : 5.

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⇒ 12 + x = 15

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5 0
2 years ago
when a stone falls freely, the time taken to hit the ground varies as the square root of the distance fallen. If it takes four s
Eva8 [605]

Answer:

The stone would take approximately 10.107 seconds to fall 500 meters.

Step-by-step explanation:

According to the statement of the problem, the following relationship of direct proportionality is built:

t \propto y^{1/2}

t = k\cdot t^{1/2}

Where:

t - Time spent by the stone, measured in seconds.

y - Height change experimented by the stone, measured in meters.

k - Proportionality constant, measured in \frac{s}{m^{1/2}}.

First, the proportionality constant is determined by clearing the respective variable and replacing all known variables:

k = \frac{t}{y^{1/2}}

If t = 4\,s and y=78.4\,m, then:

k = \frac{4\,s}{(78.4\,m)^{1/2}}

k \approx 0.452\,\frac{s}{m^{1/2}}

Then, the expression is t = 0.452\cdot y^{1/2}. Finally, if y = 500\,m, then the time is:

t = 0.452\cdot (500\,m)^{1/2}

t \approx 10.107\,s

The stone would take approximately 10.107 seconds to fall 500 meters.

4 0
3 years ago
Which of the following statements are always true?
Igoryamba

Answer: A trapezoid is always a parallelogram.

Step-by-step explanation:

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