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Nostrana [21]
1 year ago
12

Leo reads 14 pages in 1/3 hourWhat is the unit rate for pages per hour

Mathematics
1 answer:
pogonyaev1 year ago
7 0

To determine the unit rate of pages, that is, the number of pages Leo reads in one hour you can use cross multiplication

1/3h _____14 pages

1h______x pages

\begin{gathered} \frac{14}{\frac{1}{3}}=\frac{x}{1} \\ 14\cdot3=x \\ x=42 \end{gathered}

Leo reads 42pages/hour

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In the blank next to the distribution shape, type YES if is most often appropriate to use the mean, or NO if it is not.
Vlad1618 [11]
<h3>Answers:</h3>
  1. Yes
  2. No
  3. No
  4. Yes
  5. Yes

=======================================

Explanations:

  1. A bell shaped curve is symmetric, meaning one half is a mirror copy of the other half. The mean, median and mode are both at the same value: at the center (which is where the peak is located).
  2. A bimodal curve is one where it has two peaks. This is because it has 2 modes. Both peaks are the same height. If one height was taller, then you'd only have 1 mode. The mean wouldn't be as useful because we'd lose information about the two different modes. The mean would be somewhere in between the two peaks, where not much data points reside.
  3. A skewed distribution is one where the tail is pulled from the main group/cluster. This pulls on the mean to be distorted from the center. If the tail is pulled to the right (right-skewed or positively skewed) then the mean is larger than it should be. If the tail is pulled to the left (left-skewed or negatively skewed) then the mean is smaller than it should be. It's better to use the median in this case. Example: home prices where large mansions are large outliers to make the mean larger than it should be, so the median home price is used instead.
  4. As discussed in part 1 above, the mean is useful here. A bell shaped curve is one type of symmetric curve, but there are infinitely many other kinds of symmetric curves possible. All that matters is that one side is reflected over the vertical center line to get the other half.
  5. A uniform distribution is symmetric. If the left and right endpoints are p and q, then the mean (p+q)/2 is the center and it is useful.
5 0
3 years ago
Kadir, Chandran and Ping Wei participated in a Science quiz. The number of questions they had answered was in the ratio 4:6:3. C
Bas_tet [7]

Answer:

35

Step-by-step explanation:

We can call the amount of questions they answered as 4x, 6x and 3x respectively. Since Chandran answered 30 questions, we know that 6x = 30 so x = 5. The total number of questions Kadir and Ping Wei answered was 4x + 3x = 7x and since we know that x = 5, the answer is 7 * 5 = 35 questions.

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4 years ago
It takes 570 gallons of paint to
Irina18 [472]

Answer:

142.5 gallons

Step-by-step explanation:

Divide 570 by 4 and then use that for one side

5 0
3 years ago
Sales Tax - You go to the store and purchase a shirt for $33.99, how much will you pay
Savatey [412]

Answer:

$95.17

Step-by-step explanation:

33.99 \times 0.0825

= 2.80

33.99 + 2.80

= $95.17

7 0
3 years ago
Cuanto es 103+80 entre 4
I am Lyosha [343]

Answer:

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Step-by-step explanation:

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