Correct 89.6162 to two decimal places

Since we are correcting to two decimal places, we would just need the first three decimal places, as it is the third decimal place which will determine the result.
If the third decimal place is 0, 1, 2, 3, or 4, we round it down. If it is 5, 6, 7, 8, or 9, then we round it up. Since the third decimal place is 6, we round 89.6162 up to 89.62.
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A) 12,14,16

B) 3x+1=16

Step-by-step explanation:

A)

They already gave you the equation to solve:

n+(n+2)+(n+4)=42

n+n+2+n+4=42

Put like terms together:

n+n+n+2+4=42

Combine the like terms:

3n+6=42

Subtract 6 on both sides:

3n=42-6

Simplify:

3n=36

Divide both sides by 3:

n=36/3

Simplify:

n=12

If n=12,

then

n+2=14 and

n+4=16.

Check the addition of those numbers: 12+14+16=26+16=42.

B)

There is a lot of equations that have a solution of 5.

It might be good start with x=5.

Then just remember whatever you do to one side, you must do to the other.

x=5

Multiply both sides by 3:

3x=15

Add 1 on both sides:

3x+1=16

An example of equation that solution 5 is 3x+1=16.