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2 years ago

How can I solve w = 9x + 5y solve for y

Mathematics

2 answers:

katovenus [111]2 years ago

7 0

Answer:

w-9x/5=y

Step-by-step explanation:

It really isn't that hard. Don't let the other variables confuse you. First get everything else on one side. So, subtract 9x from w. You can't really do that, so you just leave it as w-9x.

Then you are left with w-9x=5y. This is like a 2-step equation. So divide 5 on both sides. Doing this leaves you with w-9x/5=y.

Thank you.

ValentinkaMS [17]2 years ago

4 0

Step-by-step explanation:

w=9x+5y

-9x+w=5y

-9x/5+w/5=y

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Alicia has 6 paintings she wants to hang side by side on her wall.

gayaneshka [121]

<u>Answer:</u>

A) 720 ways

B) 15 ways

C) 6 ways

<u>Step-by-step explanation:</u>

A) To find the number of ways Alicia can arranger her 6 paintings, we will find factorial of 6 by multiplying all of the positive integers equal to or less than that number i.e. 6 to get:

6! = 6 * 5 * 4 * 3 * 2 * 1 = 720

Alicia can arrange her paintings in 720 ways.

B) We use the following formula (when order is not important) to find the number of permutations of n objects taken r at a time:

$P(n, r) = \frac{n!}{r!(n-r)!}$

$= \frac{6!}{4!(6-4)!} = 15$

Therefore, Alicia can choose any 4 of her paintings in 15 ways.

C) Number of ways Alicia can arrange 3 out of 6 paintings = 3! = 3*2*1 = 6 ways

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