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creativ13 [48]
3 years ago
14

How do u do this question I have been trying

Mathematics
1 answer:
77julia77 [94]3 years ago
6 0

Answer:

A.

Step-by-step explanation:

Proportionality concerns the ratio between two values, so C and D can be knocked off since they talk about difference. So that leaves us A and B. To find out if m and k are proportional, let's find the ratio between them (which means dividing them) for each set of speeds:

11.0/17.699 = 0.6215040398

26.0/41.834 = 0.6215040398

34.0/54.706 = 0.6215040398

We can see that all of the ratios return the same number, which means that the ratio of m to k is constant, so therefore the relationship is proportional, and the answer is A.

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Use the cumulative frequencies to figure out what the individual frequencies would be. Check out the attached image for the table of x values with their corresponding frequency (f) values. Note how the partial sums add up to the cumulative frequency values.

Once you know the frequency f values, multiply each x and f pair together in each row. The column labeled "x*f" represents each product. Afterward, add up everything in the x*f column to get the final answer 6.8

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John has $24. He uses 2/3 of his money to buy a pair of shoes . How much money is left?
Natasha_Volkova [10]
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Step-by-step explanation:

4 0
3 years ago
Show work
adelina 88 [10]

Answer:

  1. n = 5
  2. m = 12
  3. m= -14
  4. y =30

Step-by-step explanation:

1.

n -8 =-3\\\\Collect\:like\:terms\\n = -3+8\\\\Simplify ; -3+8 = 5\\\\n =5

2.

-2m=-24\\\\Divide\: both \:sides\:of\:the\:equation\:by\:-2\\\\\frac{-2m}{-2} = \frac{-24}{-2} \\\\Simplify ; -2m/-2 = m , -24/-2 = 12\\\\m =12

3.

\frac{m}{2}=-7\\\\Cross\:Multiply\\\\m\times 1 = 2\times -7\\\\m = -14

4.

\frac{2}{3}y=20\\ \\\frac{2}{3} y = \frac{20}{1} \\\\Cross\:Multiply\\\\2y\times 1 = 3\times 20\\\\2y = 20\\\\\mathrm{Divide\:both\:sides\:by\:}2\\\frac{2y}{2}=\frac{60}{2}\\\\Simplify\\y = 30

3 0
4 years ago
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