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3 years ago

How Do You Find A Rate From A Table?

1 answer:

8 0

Get two points and do change in y over change in x

for example
the 2 points are (2,4) (4,8)

change in y: 8-4= 4
change in x: 4-2=2
4/2= 2

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Jonathan collects postcards and stamps. The number of postcards in his collection is 12 more than 3/4 the number of stamps. He h

zimovet [89]

For this case we define the following variable:

x: number of stamps

We now write the equation that models the problem:

$\frac {3} {4} x + 12 = 39$

From here, we clear the value of x.

We have then:

$\frac {3} {4} x = 39-12\\\frac {3} {4} x = 27\\x = (\frac {4} {3}) (27)\\x = (4) (9)\\x = 36$

Answer:

The number of stamps he has is:

$x = 36$

7 0

3 years ago

Read 2 more answers

A travelling salesman sells milkshake mixing machines and on average sells 8.4 machines per month. He needs to sell at least 3 m

klio [65]

Answer:

P(X<3) = 0.01004

Step-by-step explanation:

From the given information:

Consider the application of Poisson distribution $P(X = x ) = \dfrac{e^{-\lambda} \lambda ^x}{x!}$ with the parameter $\lambda = 8.4$ ;

Therefore, we can calculate the required probability as follows:

P(X< 3) = P(X = 0) + P(X = 1) + P(X =2)

$P(X< 3) = \dfrac{e^{-8.4} 8.4^0}{0!} + \dfrac{e^{-8.4} 8.4^1}{1!} + \dfrac{e^{-8.4} 8.4^2}{2!}$

$P(X< 3) =e^{-8.4}( 1 + 8.4+35.28)$

P(X<3) = 0.01004

6 0

3 years ago

Consider the dot plot which shows the distribution of data collected on the amount of time Jason sleeps each night. Find the dif

Tatiana [17]

Answer:

A) 0.2

Step-by-step explanation:

From least to greatest, the data points are

6, 6, 6, 7, 7, 7, 8, 8, 8, 9

To find the mean, we find the sum of the data points and divide by the number of data points, 10. The sum of the data points is

6+6+6+7+7+7+8+8+8+9 = 72

Dividing by 10, the mean is 72/10 = 7.2.

The median is the middle number in the set. This is 7.

The difference between the mean and the median is

7.2-7 = 0.2.

8 0

3 years ago

I work 25 hours a week and make $5.50 how much money will i earn in one month

Lemur [1.5K]

First, you have to find out how much you make per week. so that would be 25*5.50 and you would get 137.50. next, there are about 4 weeks in a month, so you multiply 137.50 by 4 and get 550.
so, you would make $550.
I hope this helps

7 0

3 years ago

Find the slope of the line segment shown. A) -1/2 B -1 C 1/3 D 1

Rama09 [41]

The slope is 1 :) because it’s moving 1 square up and over (rise over run)

3 0

2 years ago

Read 2 more answers