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3 years ago

Please answer this correctly

Mathematics

2 answers:

emmasim [6.3K]3 years ago

7 0

Answer:

Median

Step-by-step explanation:

Mean of 10 numbers = 260/10 = 26

Mean of 11 numbers = 286/11 = 26

No change

Median:

Median for 10 numbers

12 , 14, 15 , 17 , 19 , 27, 29 ,37 , 45, 45

Median = 19+27/2 = 46/2 = 23

Median of 11 numbers

12 , 14, 15 , 17 , 19 , 26, 27, 29 ,37 , 45, 45

Median = 26

Median changes the most

fomenos3 years ago

5 0

Answer:

Median

Step-by-step explanation:

I believe this is median, as the mode and median stay the same numbers with and without 26, Mean 26, Mode 45, so the median would change the most as it goes from 23 to 26

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If six times a number is decreased by fourteen, the result is 124. What is the number

denis23 [38]

Answer:

$\large\boxed{23}$

Step-by-step explanation:

Six times a number is decreased by fourteen, the result is 124.

Write an equation that represents this

(6 * x) - 14 = 124

Multiply 6 by x to remove the parenthesis

6x - 14 = 124

Add 14 to both sides of the equation

6x = 138

Divide both sides of the equation by 6

x = 23

The unknown number is $\large\boxed{23}$

Hope this helps :)

3 0

4 years ago

Read 2 more answers

What is the product of all constants $k$ such that the quadratic $x^2 + kx +15$ can be factored in the form $(x+a)(x+b)$, where

Setler79 [48]

Answer:

$k=-16,k=-8,k=8,k=16$

Step-by-step explanation:

We are given quadratic equations as

$x^2+kx+15$

and it can be factored as

$=(x+a)(x+b)$

now, we can multiply factor term

$(x+a)(x+b)=x^2+(a+b)x+ab$

now, we can compare

$x^2+(a+b)x+ab=x^2+kx+15$

so, we get

$k=a+b$

$ab=15$

we are given that

'a' and 'b' are integers

so, we can find all possible factors

$15=(-1\times -15),(1\times 15)$

$15=(-3\times -5),(3\times 5)$

so, we can find k

At $(-1\times -15)$ :

$k=a+b$

we can plug values

$k=-1-15$

$k=-16$

At $(1\times 15)$ :

$k=a+b$

we can plug values

$k=1+15$

$k=16$

At $(-3\times -5)$ :

$k=a+b$

we can plug values

$k=-3-5$

$k=-8$

At $(3\times 5)$ :

$k=a+b$

we can plug values

$k=3+5$

$k=8$

So, values of k are

$k=-16,k=-8,k=8,k=16$

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frez [133]

You have to do this ok

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4 years ago

40% of what number is 24

liq [111]

40% of what number is 24

24 : 40 * 100 =

60 is your answer

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3 years ago

A copy machine makes 24 copies per minute. how many copies does it make in 5 minutes and 30 seconds

enot [183]

In 1 minute the copy machine copies = 24
That means
In 60 seconds the copy machine copies = 24
First we need to convert 5 minutes and 30 seconds to seconds
Then
5 minutes and 30 seconds = (5 * 60) + 30
   = 300 + 30
   = 330 seconds
So
In 330 seconds the copy machine will copy = (24/60) * 330
   = 4 * 33
   = 132
So in 5 minutes and 30 seconds the copy machine will copy 132 copies.

6 0

3 years ago

Read 2 more answers