Hey can you plzzz help me? its Apply the distributive property to create an equivalent expression.

Mathematics

2 answers:

Allushta [10]2 years ago

5 0

Answer:

18c - 30d + 36

Step-by-step explanation:

6(3c - 5d + 6) = ?

You first multiple 6 to 3c. This leaves you with 18c. Next, you multiply 6 to (-5d). Remember that it is a negative because it has a minus sign in front of the number, leaving you with -30d. Lastly, you have 6 times 6, which is 36. This leaves us with the equation of 18c - 30d + 36. I hope this helped.

velikii [3]2 years ago

4 0

Answer:

18c - 30d + 36

Step-by-step explanation:

you multiply the number outside to the numbers inside the parenthesis.

6 * 3c = 18c

6* -5d = -30d

6*6= 36

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The average (arithmetic mean) of y numbers is x. if 30 is added to the set of numbers, then the average will be x - 5. what is t

Anastasy [175]

Given,

AM of y numbers = x.

Let the sum of y numbers be s.

AM of y numbers = x

$\frac{s}{y} = x$

$s = y*x$

Given, when 30 is added to the y numbers, the AM becomes x - 5.

$\frac{s + 30}{y + 1} = x - 5$

$\frac{y*x + 30}{y +1} = x - 5
$

$y*x + 30 = (x -5)( y +1)$

$y*x + 30 = y*x + x - 5y -5$

$5y = x - 5 -30 = x - 35
$

$y = \frac{x -35}{5}$