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Marysya12 [62]
3 years ago
8

Salvador wrote 15 letters to friends each month for p months in a row. Write an expression to show how many total letters Salvad

or wrote
Mathematics
1 answer:
katovenus [111]3 years ago
7 0

Answer:

15p

Step-by-step explanation:

<u>Let's interpret the question bit by bit</u>

<em>Salvador wrote 15 letters to friends each month</em>

=> 15 letters = 1 month

<em />

<em>For p months in a row</em>

let the total number of letters for p months be x

=> x letters = p months

<em>Bringing the two statements together gives;</em>

15 letters = 1 month

x letters = p months

<em>Now, let's solve for </em><em>x </em><em>by cross-multiplying the above</em>

x letters * 1 month = 15 letters * p months

x = \frac{15 letters * p months}{1 month}

x = 15p letters

Therefore, Salvador wrote a total of 15p letters for the p months.

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The formula to estimate organic growth is Pf=P0 . e^rt
Zanzabum

Answer:

  • 16.12 hr

Step-by-step explanation:

<u>If I got it right, we have:</u>

  • Formula Pf = P0*e^(rt)
  • Pf = 75709
  • P0 = 1349
  • r = 25% = 0.25
  • t = ?

<u>Substitute the given values and solve for t:</u>

  • 75709 = 1349*e^(0.25t)
  • e^(0.25t) = 75709/1349
  • e^(0.25t) = 56.1223
  • ln e^(0.25t) = ln 56.1223
  • 0.25t = 4.03
  • t = 4.03/0.25
  • t = 16.12 hr

3 0
3 years ago
I needddd helppp please
Radda [10]

Answer:

The answer is 16

Step-by-step explanation:

It's 16 cause both side are the same.

7 0
3 years ago
What is the probability of meeting someone born in January or December (Assume there are 365days in a year)
Karolina [17]
The answer is 62/365 i got
3 0
4 years ago
Mr. Green teaches mathematics and his class recently finished a unit on statistics. The student scores on this unit are: 40 47 5
Harrizon [31]

Answer:

Mean = 64.46, Median = 62 and Mode = Bi-modal (50 and 62)

Range of the data is 55.

Step-by-step explanation:

We are given that Mr. Green teaches mathematics and his class recently finished a unit on statistics.

<u>The student scores on this unit are:</u>  40, 47, 50, 50, 50, 54, 56, 56, 60, 60, 62, 62, 62, 63, 65, 70, 70, 72, 76, 77, 80, 85, 85, 95.

We know that Measures of Central Tendency are: Mean, Median and Mode.

  • Mean is calculated as;

                   Mean  =  \frac{\sum X}{n}

where  \sum X = Sum of all values in the data

               n = Number of observations = 24

So, Mean  =  \frac{40+ 47+ 50+ 50+ 50+ 54+ 56+ 56+ 60 +60+ 62+ 62+ 62+ 63+ 65+ 70+ 70+ 72+ 76+ 77+ 80+ 85+ 85+ 95}{24}

=  \frac{1547}{24}  =  64.46

So, mean of data si 64.46.

For calculating Median, we have to observe that the number of observations (n) is even or odd, i.e.;

  • If n is odd, then the formula for calculating median is given by;

                     Median  =  (\frac{n+1}{2})^{th} \text{ obs.}

  • If n is even, then the formula for calculating median is given by;

                     Median  =  \frac{(\frac{n}{2})^{th}\text{ obs.} +(\frac{n}{2}+1)^{th}\text{ obs.}   }{2}

Now here in our data, the number of observations is even, i.e. n = 24.

So, Median  =  \frac{(\frac{n}{2})^{th}\text{ obs.} +(\frac{n}{2}+1)^{th}\text{ obs.}   }{2}

                    =  \frac{(\frac{24}{2})^{th}\text{ obs.} +(\frac{24}{2}+1)^{th}\text{ obs.}   }{2}

                    =  \frac{(12)^{th}\text{ obs.} +(13)^{th}\text{ obs.}   }{2}

                    =  \frac{62 + 62  }{2}  =  \frac{124}{2}  =  62

Hence, the median of the data is 62.

  • A Mode is a value that appears maximum number of times in our data.

In our data, there are two values which appear maximum number of times, i.e. 50 and 62 as these both appear maximum 3 times in the data.

This means our data is Bi-modal with 50 and 62.

  • The Range is calculated as the difference between the highest and lowest value in the data.

                      Range  =  Highest value - Lowest value

                                   =  95 - 40 = 55

Hence, range of the data is 55.

5 0
4 years ago
Help please i have no idea how to do this
vekshin1

Answer: I'm not going to give out the answers but I'm happy to explain it and help you out if you're still confused. I'm a geometry honors student rn btw just so you know my credentials.

Step-by-step explanation:

To find slope and write it in slope-intercept form you first need to know the equation and what different variables represent.

y = mx + b is the equation for slope-intercept. You need to find what m and b are to right a slope-intercept equation. for example the first problem's answer is y = \frac{-1}{2}x + 1

m is slope which is the angle that the line is at. To find slope or m, you need to choose a point on the graph. Then, count the amount of spaces vertically and horizontally until the next point on the graph. When I say point, I'm referring to a place on the graph where the line cross perfectly over the intersection of two lines on the graph. Slope is always 'rise over run' meaning it is a fraction containing the amount up or down, over the amount left or right. For example, the first problem (the one on the top left) the slope is  \frac{-1}{2} .

b is the y-intercept. The y intercept where the line crosses the y-axis which is that bold line going up and down in the middle. For example in number one, the y-intercept is 1 because it is one unit up from the origin. (the origin is 0,0, or the very middle of the graph).

Hope this helps! :)

7 0
3 years ago
Read 2 more answers
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