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3 years ago

X = 3y-9 Solve for y, now i need a refresher on this mind helping me?

Mathematics

1 answer:

Gala2k [10]3 years ago

5 0

Answer:

Is this all? You can’t obtain a number value for y, but you can obtain that y equals (9+X)/3

Step-by-step explanation:

X=3y-9

Distribute the right hand side.

3y-9=3(y-3)

Therefore,

X=3(y-3)

Divide both sides by 3

(X/3)=y-3

Add 3 to both sides

(X/3)+3=y

Simplify

(X/3)+(9/3)=y

y=(9+X)/3

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3 years ago

Here is a pattern of dots.

EleoNora [17]

The dots in the patterns are illustrations of a sequence or progression

The number of dots in step 10 is 84
The number of dots in step n is (n -1)^2+ 3

<h3>The number of dots in step 10</h3>

From the pattern, we have:

Step 0 = 3 dots
Step 1 = 4 dots
Step 2 = 7 dots
Step 3 = 12 dots

So, we have the following pattern

$T_n = (n -1)^2+ 3$

When n = 10, we have:

$T_{10} = (10 -1)^2+ 3$

T10 = 84

This means that, there will be 84 dots in step 10 and there will be (n -1)^2+ 3 dots in step n