Answer:

Step-by-step explanation:
Hello,
let's find a and b reals so that


we identify the terms in 
9 = 3a
we identify the terms in x
-18 = 3b + a
we identify the constant terms
-7 = b
so ti goes with a = 9/3 = 3, b = -7
so we can write

so 
hope this helps
The circumference of a circle with a radius of 12 cm is 75.45 cm
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
The circumference of a circle is given by:
Circumference = 2π * radius
Hence:
Circumference = 2(22/7)(12) = 75.45 cm
The circumference of a circle with a radius of 12 cm is 75.45 cm
Find out more on equation at: brainly.com/question/2972832
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Answer: What does this mean?
<u><em>Step-by-step explanation: WHAT THE DOES THIS MEAN ????????!!!!!</em></u>!
Answer: X can not be 11 or higher, so that means this problem will be 10 or lower. There for the value of X=6
Step-by-step explanation: