Ask question

Ask question

All categories

3 years ago

13

How could two data sets could have the same means and modes but still differ greatly? Give an example with two data sets to illu

strate.

1 answer:

wariber [46]3 years ago

4 0

The sets would have different sizes and standard deviations. Examples will vary. A general method for constructing

You might be interested in

−4y−4+(−3)<br> i need help solving this

ololo11 [35]

Answer: The answer is negastive 11 although I am not one thousand percent sure that this is the answer, if it is not the correct anser then please tell me and I can get the corecct anwer for you!

4 0

3 years ago

Read 2 more answers

A patient is given a 100-milligram dosage of a drug that decays exponentially at a rate of 11% per hour. The doctor wants to kno

I am Lyosha [343]

Answer:

This is an example of exponential decay (somewhat similar to half-life).

If it decays at 11% per hour we can calculate its half-life by this formula:

half life = [ time • ln (2) ] ÷ ln (beginning amount ÷ ending amount)

where "ln" means natural log

half life =[ 1 hour * .69315] / ln (100 / 89)

half life =[.69315] / ln (1.1235955056)

half life =[.69315] / 0.11653381624

half life = 5.9481 hours

We need "lambda" "λ" (the decay constant) which equals

λ = ln(2) / half-life = .693147 / 5.9481 = 0.1165325062

Now we need a formula for the time required:

time = ln (Nt ÷ N0) ÷ -λ where No = beginning amount (100 milligrams) Nt = ending amount (15 milligrams)

time = ln (15 ÷ 100) ÷ -0.1165325062

time = ln (.15) / -0.1165325062

time = -1.8971199849 / -0.1165325062

time = 16.2797492885 hours

Source: https://www.1728.org/halflif2.htm

Step-by-step explanation:

4 0

3 years ago

#13 please help solve this

rusak2 [61]

Answer:

The change in the total cost for each book printed is $10

The cost to get started is $1250

Step-by-step explanation:

In the linear equation y = m x + b, where

m is the rate of change per unit
b is the initial amount (value y at x = 0)

∵ y represents the total cost of publishing a book in dollars

∵ x represents the number of copies of the book printed

∵ y = 1250 + 10 x

- Compare it with the linear equation y = m x + b

∴ m = 10

∴ b = 1250

∵ m = Δy/Δx

- That means m is the change in the total cost per book

∴ The change in the total cost for each book printed is $10

∵ b is value y at x = 0

- That means b is the cost to get started before print any book)

∴ The cost to get started is $1250

5 0

4 years ago

Please explain how to do this.

damaskus [11]

Step-by-step explanation:

let the eqn be y = mx + b.

m = 200/(900 - 700) = 1

sub (700, 0):

0 = 700 + b

b = -700

therefore eqn is y = x - 700

Topic: coordinate geometry

If you like to venture further, do check out my insta (learntionary) where I regularly post useful math tips! Thank you!

5 0

3 years ago

Which expression can be used to find the surface area of the following square pyramid

andreyandreev [35.5K]

Answer:

$36+15+15+15+15$

Step-by-step explanation:

For the surface area we need to add up all the areas in the pyramid:

area of the base

area of the triangle sides (there are 4 triangles)

Area of the base:

the base is a square, and the area of a square is given by:

$a_{base}=l^2$

where $l$ is the length of the side: $l=6$ , thus:

$a_{base}=(6)^2\\a_{base}=36$

Area of the triangles:

one triangle has the area given by the formula:

$a_{triangle}=\frac{b*h}{2}$

where $b$ is the base of the triangle: $b=6$

and $h$ is the height of the triangle: $h=5$ , thus we have the following:

$a_{triangle}=\frac{6*5}{2} \\\\a_{triangle}=\frac{30}{2} \\\\a_{triangle}=15$

the expression that represents the surface area of the pyramid is:

$a_{base}+area_{triangle}+area_{triangle}+area_{triangle}+area_{triangle}$

substituting our values:

$36+15+15+15+15$

which is option B

7 0

4 years ago

Read 2 more answers