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3 years ago

24, 81, 70, 31, 99, 87, 35Mean:Mode:Median: Range:

Mathematics

2 answers:

aivan3 [116]3 years ago

6 0

Answer:

Mean: 61

Mode: None

Median: 70

Range: 24-99 = 75

Step-by-step explanation:

There is no mode since not one variable repeats.

How to find the mean: Add all the numbers then divide how many there are in this case there are 7.

Median is the number in the middle once put from greatest to largest and the range is min and max

meriva3 years ago

6 0

Answer: (took a lot of work so plz give brainliest!)

Mean: 61 Mode: N/A Median: 70 Range: 75

Step-by-step explanation:

To find the mean, add all of them up and then divide by the number of values (7).

24 + 81 + 70 + 31 + 99 + 87 + 35= 427/7 = 61

Mean = 61

To find the mode, it is the most common number. In this case, no numbers repeat so there is no mode.

To find the median, you organize the set from least to greatest then find the middle number.

24, 31, 35, 70, 81, 87, 99

70 is the middle number.

To find the range, subtract the smallest number from the biggest number.

99 - 24 = 75

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Se lanza un objeto desde una plataforma.

jasenka [17]

Answer:

6 seconds

Step-by-step explanation:

The question in English is

An object is thrown from a platform.

Its height (in meters), x seconds after launch, is modeled by:

h(x)=-5x^2+20x+60

How many seconds after the launch does the object reach the ground?

Let

x ----> the time in seconds

h(x) ---> the height of the object

we have

$h(x)=-5x^2+20x+60$

we know that

When the object hit the ground the height is equal to zero

For h(x)=0

we have

$-5x^2+20x+60=60$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-5x^2+20x+60=60$

$a=-5\\b=20\\c=60$

substitute in the formula

$x=\frac{-20\pm\sqrt{20^{2}-4(-5)(60)}} {2(-5)}$

$x=\frac{-20\pm\sqrt{1,600}} {-10}$

$x=\frac{-20\pm40} {-10}$

$x=\frac{-20+40} {-10}=-2$

$x=\frac{-20-40} {-10}=6$

The solution is x=6 sec

The he object reach the ground at x=6 seconds

7 0

3 years ago

To host school groups on field trips, a museum charges a flat fee of $250 plus $8 for each student who attends. If a school can

Law Incorporation [45]

First of all, you have to define the value which cannot be changed, in this case it is $250, becuase it is a fixed fee.Then subtract 250 the fee from the amout of money that school can spend = 335
Then divide remaining cash by 8 the price per student : 335:8
and you will get 41.875
As you can see, you have to round the number down to 41, otherwise we would go over the school budget.
Therefore, the number of students is 41.

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