The variation equation when y varies directly as the square of x is y = kx².
The value of y when x = 30 is 900k.
<h3 /><h3>Definition and types of variation:</h3>
Variation establish relationship between variable. Types of variation includes
- Direct variation
- Inverse variation
- Joint variation
- Combined variation
y varies directly as the square of x , Therefore,
where
k = constant of proportionality
Solve for y when x = 30.
Therefore,
y = kx²
y = 30²k
y = 900k
learn more on variation here:brainly.com/question/13977805?referrer=searchResults
Answer:
Option A must be true.
Step-by-step explanation:
<h3>
Answer: 6</h3>
Work Shown:
E = exterior angle = 60 degrees
n = number of sides of the regular polygon
n = 360/E
n = 360/60
n = 6
The regular polygon has 6 sides.
Answer:
I believe #20. is A
Step-by-step explanation:
because if you use distributive property and multiply the 5 to the () numbers you will get your original question.
Also, i cant see all of the options for #21.
Answer:
Step-by-step explanation:
we know that
Every difference of squares problem can be factored as follows:
If the polynomial represent a difference of squares every number must be a <u>perfect square</u> (Remember that a number is a perfect square if its square root is an integer.)
<em><u>Verify each case</u></em>
case 1) we have
In this case both numbers are perfect square
so
therefore
The polynomial represent a difference of squares
case 2) we have
In this case 8 is not a perfect square
therefore
The polynomial not represent a difference of squares
case 3) we have
In this case both numbers are perfect square
but is a sum of squares
therefore
The polynomial not represent a difference of squares
case 4) we have
In this case 2 is not a perfect square
therefore
The polynomial not represent a difference of squares