I'll treat these like they're two seperate problems because how you set it up they're not together. If it's one whole problem please tell me and I'll solve it that way. :-)
First one: 3x+9+8x + 12
Collect like terms and simplify
(3x+8x)+(9+12)
11x+21
Second one: 2x + 6+x² + 6x + 9
Collect like terms and simplify

8x+15+
Hope this helps you, have a BLESSED and wonderful day, as well as a safe one!
-Cutiepatutie ☺❀❤
Answer: linear
Step-by-step explanation:
as you can see the equation are smetrical and vertically placed on the equator outline in math terminology and the line of out border matches with the z in parrellelement and equation. with that being said it is linear.
Answer:
Most: Black 5/6
Least: Red 1/8
Step-by-step explanation:
this is the fraction, least to greatest:
1/8 < 1/4 < 2/5 < 1/2 < 7/12< 5/6
The is a subtraction equation, so the smaller number from the bigger number.
1743 - 576 = 1167 :3
ANSWER:
square root of ( 100x^2 + 60x + 9 )
An expression to represent the length of each side of the rug is:
square root of ( 100x^2 + 60x + 9 )
STEP-BY-STEP EXPLANATION:
Let's establish that the area of a square is the length of one of its sides squared.
Area of square = Side^2
THEREFORE:
To find the length of each side of the square, we will make side the subject in the formula as displayed below.
Area of square = Side^2
Side^2 = Area of square
Side = square root of ( area of square )
From this, we will substitute the given expression for the area of the square rug to obtain the expression for the length of each side of the rug.
Side = square root of ( 100x^2 + 60x + 9 )