Mathematics: The mean of four consecutive even numbers is 15.the greatest of these numbers is a1.the least of these numbers is a2.

The mean of four consecutive even numbers is 15.the

Ответ:

uticabadgirl

31.12.2021

Mathematics

Hello,

I suppose you want the 4 numbers.

Let's call the numbers 2n,2n+2,2n+4,2n+6

$2n+2n+2+2n+4+2n+6[=8n+12=15*4\\
8n+12=60\\
8n=48\\
n=6\\\\
2n=12\\
2n+2=14\\
2n+4=16\\
2n+6=18\\
$

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Ответ:

nateqqj

31.12.2021

Mathematics

Let x be the first even number. Then adding 2 consecutively gives us the subsequent even numbers. That is

x,x+2,x+4,x+6

From the question, the mean of these four numbers is 15. That is;

$\frac{\sum x}{n} =15$

$\Rightarrow \frac{x+(x+2)+(x+4)+(x+6)}{4} =15$

$\Rightarrow \frac{x+x+2+x+4+x+6}{4} =15$

$\Rightarrow \frac{x+x+x+x+2+4+6}{4} =15$

$\Rightarrow \frac{4x+12}{4} =15$

Multiply both sides by 4 to obtain,

$\Rightarrow 4\times \frac{4x+12}{4} =4 \times15$

$\Rightarrow 4x+12 =60$

$\Rightarrow 4x =60-12$

$\Rightarrow 4x =48$

Divide both sides by 4 to obtain,

x =12

Hence the greatest of the numbers is 12+6=18

and the least of the numbers is

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Ответ:

apples2190

17.07.2022

Mathematics

A. negative 5 over 8 minus negative 2 over 8 = negative 3 over 8; therefore, the distance from A to B is absolute value of negative 3 over 8 equals 3 over 8 units.

Step-by-step explanation: I took the test. Hope this helps! ;)

P.S brainliest would be much appreciated.

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The mean of four consecutive even numbers is 15.the greatest of these numbers is a1.the least of these numbers is a2.

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